Thermal transfer sheet

ABSTRACT

The present invention provides a pyridine derivative represented by the following formula A or B, a dye produced by coupling the pyridine derivative A or B with an arbitray coupler and a thermal transfer sheet wherein use is made of the dye. In a thermal transfer process wherein use is made of a sublimable dye, the dye and the thermal transfer sheet according to the present invention can form a clear image having a sufficient density and an excellent light fastness.    &lt;IMAGE&gt;  (A)   &lt;IMAGE&gt;  (B)

This is a Continuation of application Ser. No. 08/297,035 filed Aug. 29, 1994, now abandoned, which is a division of application Ser. No. 07/877,882 filed May 4, 1992, now U.S. Pat. No. 5,374,601.

BACKGROUND OF THE INVENTION

1. Field of the Art

The present invention relates to a dye intermediate, a dye and a thermal transfer sheet. More particularly, it is concerned with an intermediate capable of providing a dye excellent in the coloring density, sharpness, light fastness, safety, etc., a dye and a thermal transfer sheet excellent in the above-described properties.

2. Background Art

Various thermal transfer processes are known in the art. Among them, a sublimation transfer process has been practiced which comprises supporting a sublimable dye as a recording agent on a substrate sheet, such as paper, to form a thermal transfer sheet, putting the thermal transfer sheet on a transfer material dyeable with a sublimable dye, for example, a polyester woven fabric, and applying a thermal energy in a pattern form from the back surface of the thermal transfer sheet to transfer the sublimable dye to the transfer material.

In recent years, a proposal has been made on a process wherein various full color images are formed on paper or a plastic film through the use of the above-described sublimation type or thermal transfer system. In this case, a thermal head of a printer is used as heating means, and a number of color dots of three or four colors are transferred to the transfer material, thereby reproducing a full color image of an original by means of the multicolor dots.

Since the color material used is a dye, the image thus formed is very clear and highly transparent, so that the resultant image is excellent in the reproducibility and gradation and the quality of the image is the same as that of an image formed by the conventional offset printing and gravure printing. In this method, it is possible to form an image having a high quality comparable to a full color photographic image.

The most important problem in the thermal transfer process resides in the color density, sharpness and light fastness of the formed image, and no dye which could have sufficiently solved these problems are known in the art.

SUMMARY OF THE INVENTION

Accordingly, an object of the present invention is to provide a thermal transfer sheet which, in a thermal transfer process wherein use is made of a sublimable dye, can provide a clear image having a sufficient density, the formed image being excellent in the light fastness.

The above-described object can be attained by the present invention. Specifically, the present invention provides a pyridine derivative represented by the following formula A or B, a dye produced by coupling the pyridine derivative A or B with any coupler and a thermal transfer sheet using the dye: ##STR2## wherein Z stands for an atom or atom group having a coupling capability selected from a hydrogen atom, an amino group, a halogen atom, a nitro group and a nitroso group, R₁ and R₂ each independently stand for a hydrogen atom or a substituted or unsubstituted alkyl group, vinyl group, allyl group, aryl group, alkoxyalkyl group, aralkyl group, alkoxycarbonylalkyl group, carboxyalkyl group, alkoxycarboxyalkyl group, substituted or unsubstituted cycloalkyl group, substituted or unsubstituted acylamino group, substituted or unsubstituted alkylsulfonylamino group, substituted or unsubstituted oxycarbonyl group, substituted or unsubstituted ureido group, substituted or unsubstituted carbamoyl group, substituted or unsubstituted sulfamoyl group, substituted or unsubstituted heterocyclic group, substituted or unsubstituted acyl, substituted or unsubstituted amino group or substituted or unsubstituted sulfonyl group, provided that R₁ and R₂ may combine with each other to form a ring or R₁ or R₂ may combine with X or Y to form a ring; R₃ stands for a hydroxyl group, a halogen atom, a cyano group or a substituted or unsubstituted alkyl group, alkylformylamino group, alkylsulfonylamino group, formylamino group, allylformylamino group, sulfonylamino group, allylsulfonylamino group, carbamoyl group, sulfamoyl group, amino group, carboxyl group, alkoxy group or ureido group; and n is an integer of 0 to 3.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram showing the results of H-NMR of the pyridine derivative of the present invention;

FIG. 2 is a diagram showing the results of H-NMR of the pyridine derivative of the present invention;

FIG. 3 is a diagram showing a visible absorption spectrum of the dye of the present invention; and

FIG. 4 is a diagram showing a visible absorption spectrum of the dye of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

A heat transfer sheet capable of providing a record image excellent in the coloring density, sharpness and light fastness is provided through the use of a dye having a particular structure.

The present invention will now be described in more detail with reference to the following preferred embodiments.

The pyridine derivative of the present invention is represented by the general formula A or B. For example, 50 g of 2-chloro--5-nitropyridine and 150 ml of diethylamine were placed in a sealed tube and heated at 120° C. for 7 hr. Pure water was added to the precipitated crystal, and the crystal was collected by filtration and recrystallized from 300 ml of methanol to give 53 g of 2-diethylamino-5-nitropyridine (yield: 86%, melting point: 75° to 76° C.).

40 g of the 2-diethylamino-5-nitropyridine was subjected to catalytic reduction in one liter of methanol through the use of 2 g of 10% Pd-C. The catalyst was removed by filtration, and the filtrate was concentrated to give 32 g of 5-amino-2-diethylaminopyridine (yield: 95% oleaginous form).

The dye of the present invention can be produced by coupling the above-described pyridine derivative A or B with any known coupler and represented by the following general formula A' or B'. ##STR3## wherein R₁ to R₃, X, Y and n are as defined above and A stands for a residue of any coupler.

Several processes for producing the above-described dye will now be exemplified.

<SYNTHESIS EXAMPLE 1>

7 g of 2-acetylamino-4,6-dichloro-5-methylphenol and 5 g of 5-amino-2-diethylaminopyridine were dissolved in 240 ml of ethanol. 80 ml of an aqueous solution of 15.8 g of sodium carbonate and 60 ml of an aqueous solution of 11.9 g of red prussiate were successively added to the resultant solution with stirring, and the mixture was stirred at room temperature for 2 hr. Thereafter, 300 ml of water was added thereto, and the mixture was stirred for 30 min and extracted with 400 ml of ethyl acetate. The resultant organic layer was separated, washed with water, dried and removed by distillation. The residue was purified by silica gel column chromatography and recrystallized twice from ethanol to give 0.5 g of a dye represented by the following structural formula. The ultraviolet and visible absorption spectrum is shown in FIG. 3. ##STR4##

<SYNTHETIC EXAMPLE 2>

5 g of 2-propylamide-1-naphthol and 7.0 g of 5-amino-2-diethylaminopyridine were dissolved in 250 ml of ethanol. 80 ml of an aqueous solution of 15.8 g of sodium carbonate and 60 ml of an aqueous solution of 11.9 g of red prussiate were successively added to the resultant solution with stirring, and the mixture was stirred at room temperature for 2 hr. Thereafter, 300 ml of water was added thereto, and the mixture was stirred for 30 min and extracted with 400 ml of ethyl acetate. The resultant organic layer was separated, washed with water, dried and removed by distillation. The residue was purified by silica gel column chromatography and recrystallized twice from ethanol to give 3.7 g of a dye represented by the following structural formula. The ultraviolet and visible absorption spectrum is shown in FIG. 4. ##STR5##

The λmax and molar extinction coefficient (ε) and melting point (mp) of dyes produced in the same manner as that described above are exemplified in Tables 1 to 3.

(1) Dyes having the following structure:

                                      TABLE 1                                      __________________________________________________________________________      ##STR6##                                                                      No R.sub.1                                                                            R.sub.2                                                                            R.sub.3                                                                             R.sub.4                                                                               R.sub.6                                                                            R.sub.7                                                                           lmax                                                                              e   mp                                        __________________________________________________________________________     1-1                                                                               C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                    3CH.sub.3                                                                           NHCOCH.sub.3                                                                          CH.sub.3                                                                           Cl 610.0                                                                             24600                                                                              166                                       1-2                                                                               C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                    5CH.sub.3                                                                           NHCOCH.sub.3                                                                          CH.sub.3                                                                           Cl 609.6                                                                             20200                                                                              197                                       1-3                                                                               C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                    3,5-diCH.sub.3                                                                      NHCOCH.sub.3                                                                          CH.sub.3                                                                           Cl 654.0                                                                              8580                                                                              197                                       1-4                                                                               C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                    H    NHCOCH.sub.3                                                                          CH.sub.3                                                                           Cl 586.0                                                                             22700                                                                              178                                       __________________________________________________________________________

(2) Dyes having the following structure:

                                      TABLE 2                                      __________________________________________________________________________      ##STR7##                                                                      No R.sub.1                                                                            R.sub.2                                                                            R.sub.3                                                                           R.sub.4                                                                              R.sub.6                                                                            R.sub.7                                                                           γmax                                                                        ε                                                                          mp                                           __________________________________________________________________________     2-1                                                                               C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                    H  NHCOPh                                                                               CH.sub.3                                                                           Cl 572.0                                                                             29600                                                                              168                                          __________________________________________________________________________

(3) Dyes having the following structure:

                                      TABLE 3                                      __________________________________________________________________________      ##STR8##                                                                      No R.sub.1 R.sub.2 R.sub.3                                                                             R.sub.4      γmax                                                                        ε                                                                          mp                                 __________________________________________________________________________     3-1                                                                               C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        H    CONHC.sub.3 H.sub.7                                                                         608.4                                                                             22500                                                                              124                                3-2                                                                               C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONHC.sub.3 H.sub.7                                                                         631.4                                                                             24200                                                                              103                                3-3                                                                               C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        5-CH.sub.3                                                                          CONHC.sub.3 H.sub.7                                                                         623.6                                                                             20800                                                                              105                                3-4                                                                               C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONHPh       649.6                                                                             27200                                                                              196                                3-5                                                                               C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3,5-diCH.sub.3                                                                      CONHC.sub.3 H.sub.7                                                                         667.6                                                                              9500                                                                              183                                3-6                                                                               C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3,5-diCH.sub.3                                                                      CONHPh       684.8                                                                             11300                                                                              224                                3-7                                                                               C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        5-CH.sub.3                                                                          CONHPh       642.4                                                                             23200                                                                              190                                3-8                                                                               C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONH-allyl   632.7                                                                             24600                                                                              147                                3-9                                                                               C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONH-2-toluyl                                                                               651.0                                                                             27700                                                                              200                                3-10                                                                              C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONH-4-(n-butylphenyl)                                                                      648.4                                                                             27600                                                                              153                                3-11                                                                              C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONH-2-ethylphenyl                                                                          649.6                                                                             27800                                                                              155                                3-12                                                                              C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONH-3,4-xylyl                                                                              648.4                                                                             27600                                                                              174                                3-13                                                                              C.sub.4 H.sub.9                                                                        C.sub.4 H.sub.9                                                                        3-CH.sub.3                                                                          CONHPh       654.8                                                                             29000                                                                              144                                3-14                                                                              C.sub.4 H.sub.9                                                                        C.sub.4 H.sub.9                                                                        3-CH.sub.3                                                                          CONH-2,4-xylyl                                                                              654.0                                                                             29100                                                                              151                                3-15                                                                              C.sub.4 H.sub.9                                                                        C.sub.4 H.sub.8 OH                                                                     3-CH.sub.3                                                                          CONHC.sub.3 H.sub.7                                                                         636.8                                                                             25100                                                                               85                                3-16                                                                              C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONH-cyclohexyl                                                                             631.2                                                                             25400                                                                              149                                3-17                                                                              C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                     3-CH.sub.3                                                                          CONHC.sub.3 H.sub.7                                                                         626.4                                                                             22500                                                                              156                                3-18                                                                              C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                     3-CH.sub.3                                                                          CONH-3-toluyl                                                                               645.6                                                                             25300                                                                              176                                3-19                                                                              C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                            3-CH.sub.3                                                                          CONHC.sub.3 H.sub.7                                                                         605.6                                                                             18700                                                                              101                                3-20                                                                              C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                            3-CH.sub.3                                                                          CONH-cyclohexyl                                                                             608.4                                                                             18900                                                                              124                                3-21                                                                              C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                            3-CH.sub.3                                                                          CONH-3-toluyl                                                                               624.8                                                                             20700                                                                              135                                3-22                                                                              C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONHC.sub.3 H.sub.6 OH                                                                      631.6                                                                             23600                                                                              120                                3-23                                                                              C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONHC.sub.3 H.sub.6 OCOCH.sub.3                                                             631.6                                                                             24000                                                                              111                                3-24                                                                              C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        3-CH.sub.3                                                                          CONHC.sub.3 H.sub.6 OCOOPh                                                                  632.8                                                                             24300                                                                              111                                3-25                                                                              C.sub.2 H.sub.5                                                                        C.sub.4 H.sub.8 OH                                                                     3-CH.sub.3                                                                          CONHC.sub.3 H.sub.7                                                                         634.0                                                                             24800                                                                               92                                3-26                                                                              C.sub.2 H.sub.5                                                                        C.sub.4 H.sub.8 OH                                                                     3-CH.sub.3                                                                          CONH-cyclohexyl                                                                             635.2                                                                             23800                                                                              123                                3-27                                                                              C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                        H    CONH-3-ethylphenyl                                                                          623.6                                                                             25800                                                                              141                                __________________________________________________________________________

(4) Dyes having the following structure: ##STR9## wherein K stands for --N═N--, R₄ to R₈ stand for a hydrogen atom, a halogen atom, a nitro group, a cyano group or a substituted or unsubstituted alkyl group, alkoxycarbonyl group, alkoxyalkyl group, alkoxycarbonylalkyl group, alkoxy group, cycloalkyl group or alkoxycarboxyalkyl group.

(4-a) Dyes having the following structure: ##STR10## wherein R₁ to R₈, X and n are as defined above.

Specific examples of the dye 4-a and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 4-a.

                                      TABLE 4-a                                    __________________________________________________________________________     No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                        __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --H                                            2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     2,5-diCH.sub.3                                                                        --CN                                                                               --H                                            3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --Cl                                                                               --H                                            4  --C.sub.2 H.sub.5                                                                      --Ph      2-Cl   --Br                                                                               --H                                            5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   2-NHCOCH.sub.3                                                                        --CN                                                                               --H                                            6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOC.sub.3 H.sub.7                                                     2-OH   --CN                                                                               --H                                            7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     2-NHSO.sub.2 CH.sub.3                                                                 --Cl                                                                               --CH.sub.3                                     8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 2-NHCOCH.sub.3                                                                        --CN                                                                               --CH.sub.3                                     9  --CH.sub.2 Ph                                                                          --H       4-NHCOCH.sub.3                                                                        --CN                                                                               --Cl                                           10 --C.sub.2 H.sub.5                                                                      combining of R.sub.2                                                                     4-OC.sub.2 H.sub.5                                                                    --CN                                                                               --H                                                       with --C.sub.3 H.sub.6 --X to                                                  form ring                                                           11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOCH.sub.3                                                            2-CONHCH.sub.3                                                                        --NO.sub.2                                                                         --OCH.sub.3                                    12 --C.sub.2 H.sub.5                                                                      --H       2-SO.sub.2 NHC.sub.3 H.sub.7                                                          --CN                                                                               --H                                            __________________________________________________________________________                                coloring                                                                            light                                          No. R.sub.6 R.sub.7                                                                             R.sub.8                                                                             hue  density                                                                             fastness                                       __________________________________________________________________________     1   --C.sub.4 H.sub.9                                                                      --H  --CN orange                                                                              1.53 ◯                                  2   --OC.sub.2 H.sub.4 OCH.sub.3                                                           --H  --CN orange                                                                              1.61 ◯                                  3   --NO.sub.2                                                                             --H  --Cl purple                                                                              1.60 Δ                                        4   --OC.sub.3 H.sub.7                                                                     --H  --CN orange                                                                              1.52 Δ                                        5   --COOC.sub.4 H.sub.9                                                                   --H  --CN orange                                                                              1.55 ◯                                  6   --C.sub.2 H.sub.4 OC.sub.3 H.sub.7                                                     --H  --CN orange                                                                              1.48 ◯                                  7   --C.sub.2 H.sub.4 COOPh                                                                --CH.sub.3                                                                          --Cl orange                                                                              1.30 ◯                                  8   --H     --H  --CN orange                                                                              1.74 ◯                                  9   --OC.sub.4 H.sub.9                                                                     --Cl --CN orange                                                                              1.55 Δ                                        10                                                                             cyclohexyl                                                                         --H     --CN orange                                                                              1.57 ◯                                       11  --CN    --H  --NO.sub.2                                                                          purple                                                                              1.70 Δ                                        12  --NO.sub.2                                                                             --H  --CN purple                                                                              1.62 Δ                                        __________________________________________________________________________

(4-b) Dyes having the following structure: ##STR11## wherein R₁ to R₈, X, Y and n are as defined above.

Specific exampls of the dye 4-b and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 4-b.

                                      TABLE 4-b                                    __________________________________________________________________________     No.                                                                               R.sub.1  R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                       __________________________________________________________________________     13 --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.5                                                                        --H    --CN                                              14 --C.sub.2 H.sub.4 OCOCH.sub.3                                                           --C.sub.2 H.sub.4 OCOCH.sub.3                                                            3-NHCOCH.sub.3                                                                        --CN                                                                               --H                                           15  --       --        --    --  --                                            16 --C.sub.2 H.sub.5                                                                       --CH═CHOCOCH.sub.3                                                                   3-NHCOCH.sub.3                                                                        --Br                                                                               --H                                           17 --C.sub.2 H.sub.4 Ph                                                                    --H       3-OC.sub.2 H.sub.5                                                                    --CN                                                                               --H                                           18 --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OCOOPh                                                                 3-OH   --NO.sub.2                                                                         --OCH.sub.3                                   19 --C.sub.2 H.sub.4 -                                                                     --H       3-Cl   --CN                                                                               --H                                              cyclohexyl                                                                  20 combining of                                                                            combining of                                                                             --NHSO.sub.2 CH.sub.3                                                                 --CN                                                                               --CH.sub.3                                       R.sub.1 with --C.sub.3 H.sub.6 --X                                                      R.sub.2 with --C.sub.3 H.sub.6 --X                                    to form ring                                                                            to form ring                                                       21 combining of R.sub.1 with R.sub.2 to                                                             3-CONHCH.sub.3                                                                        --CN                                                                               --OCH.sub.3                                       form ring (--C.sub.5 H.sub.10 --)                                           22 --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 COOCH.sub.3                                                           3,6-diCH.sub.3                                                                        --CN                                                                               --H                                            23 --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OH                                                                    3--CH.sub.3                                                                           --CN                                                                               --Cl                                           24 --C.sub.2 H.sub.5                                                                       --CH═CHCH.sub.3                                                                     6-CH.sub.3                                                                            --CN                                                                               --H                                            __________________________________________________________________________                                coloring                                                                            light                                          No. R.sub.6 R.sub.7                                                                              R.sub.8                                                                             hue density                                                                             fastness                                       __________________________________________________________________________     13                                                                             isoC.sub.3 H.sub.7                                                                 --H     --CN  red  1.95                                                                               Δ                                             14  --CH.sub.3                                                                             --H   --CN red 1.90 ◯                                  15   --     --    --   --  --   --                                             16  --OC.sub.3 H.sub.7                                                                     --H   --CN red 1.92 ◯                                  17  --C.sub.2 H.sub.4 OC.sub.3 H.sub.7                                                     --H   --CN red 1.85 Δ                                        18  --CN    --H   --NO.sub.2                                                                          blue                                                                               1.98 Δ                                        19                                                                             cyclohexyl                                                                         --H     --CN  red  1.82                                                                               ◯                                       20  --C.sub.2 H.sub.4 COOPh                                                                --CH.sub.3                                                                           --CN red 1.78 ◯                                  21  --H     --OCH.sub.3                                                                          --CN red 2.07 ◯                                  22  --C.sub.2 H.sub.4 -                                                                    --H   --CN red 1.93 ◯                                      cyclohexyl                                                                 23  --CH.sub.3                                                                             --Cl  --CN red 2.05 ◯                                  24  --NO.sub.2                                                                             --H   --CN blue                                                                               2.10 Δ                                        __________________________________________________________________________

(5) Dyes having the following structure: ##STR12## wherein R₄ stands for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group, alkoxy group, amino group, ureido group, carbamoyl group, sulfamoyl group, --NHCOR₈, --NHCSR₈, --NHCON(R₈)(R₉), --NHCSN(R₈)(R₉), --NHCOOR₈, --NHCSOR₈, --NHCONHR₈, --NHCSNHR₈, --NHSO₂ R₈ or --NHSO₂ N(R₈)(R₉) wherein R₈ and R₉ stand for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group, aryl group, vinyl group, allyl group, cycloalkyl group or aromatic heterocyclic group, provided that R₈ and R₉ may combine with each other to form a ring; and R₅ and R₇ stand for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group, alkoxy group, amino group, formylamino group, alkylformylamino group, sulfonylamino group, alkylsulfonylamino group, ureido group, carbamoyl group, sulfamoyl group or carboxyl group.

Specific examples of the dyes represented by the general formula 5 and the performance thereof in the case of use in a thermal transfer sheet which will be described later are given in the following Table 5.

                                      TABLE 5                                      __________________________________________________________________________      ##STR13##                                                                      ##STR14##                                                                      ##STR15##                                                                     No.                                                                               R.sub.1          R.sub.2 R.sub.3  R.sub.4                                   __________________________________________________________________________     5 common to a to c                                                             1  C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        H        NHCOCH.sub.3                              2  C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOC.sub.2 H.sub.5                       3  C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                            NHCOPh                                    4  C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHCOC.sub.2 H.sub.5                                                                     NHCO-cyclohexyl                           5  C.sub.2 H.sub.4 CN                                                                              C.sub.2 H.sub.5                                                                        OH       NHCOCH.sub.3                              6  C.sub.2 H.sub.4 OH                                                                              C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              7  C.sub.2 H.sub.4 OCH.sub.3                                                                       C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              8  C.sub.2 H.sub.4 OCOCH.sub.3                                                                     C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              9  C.sub.2 H.sub.4 OCOOPh                                                                          C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              10 C.sub.2 H.sub.4 OPh                                                                             C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              11 C.sub.2 H.sub.4 OCH.sub.2 Ph                                                                    C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              12 C.sub.2 H.sub.4 OC.sub.2 H.sub.4 OCH.sub.3                                                      C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              13 C.sub.2 H.sub.4 COOCH.sub.3                                                                     C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              14 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        H        NHCOCH.sub.3                              15 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOC.sub.2 H.sub.5                       16 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCNHCH.sub.3                           17 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHSO.sub.2 CH.sub.3                       18 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                              19 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 SO.sub.2 NHCH.sub.3                       20 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              21 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              22 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              23 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                         NHCOC.sub.6 H.sub.13                      24 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHSO.sub.2 CH.sub.3                                                                     NHCOCH.sub.3                              25 C.sub.2 H.sub.4 OCH.sub.3                                                                       C.sub.2 H.sub.5                                                                        OC.sub.2 H.sub.5                                                                        NHCOCH.sub.3                              26 C.sub.2 H.sub.4 OCOCH.sub.3                                                                     C.sub.2 H.sub.4 OCOCH.sub.3                                                            CH.sub.3 NHCOPh                                    27 C.sub.2 H.sub.4 OCOCH.sub.3                                                                     C.sub.2 H.sub.4 OCOCH.sub.3                                                            NHCOCH.sub.3                                                                            NHCOPh                                    28 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHC.sub.2 H.sub.5                         29 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHCONHCH.sub.3                                                                          N(C.sub.2 H.sub.5).sub.2                  30 C.sub.2 H.sub.4 OCH.sub.3                                                                       C.sub.2 H.sub.5                                                                        CH.sub.3 Cl                                        31 C.sub.2 H.sub.4 OCH.sub.3                                                                       C.sub.2 H.sub.5                                                                        CH.sub.3 OH                                        32 C.sub.2 H.sub.4 OCH.sub.3                                                                       C.sub.2 H.sub.5                                                                        COOCH.sub.3                                                                             H                                         33 C.sub.2 H.sub.5  H       CH.sub.3 NHCOCH.sub.3                              34 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                              35 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                              36 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                              37 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        OH       CONHCH.sub.3                              38 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHCONHC.sub.2 H.sub.5                                                                   NHCOCH.sub.3                              39 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                            CONHCH.sub.3                              40 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHSO.sub.2 CH.sub.3                                                                     CONHCH.sub.3                              41 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                            CONHCH.sub.3                              42 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                              43 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                              44 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                              45 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                              46 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                              47 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                              48 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 SO.sub.2 NHCH.sub.3                       49 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                            SO.sub.2 NHCH.sub.3                       50 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                            SO.sub.2 NHCH.sub.3                       51 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHSO.sub.2 CH.sub.3                                                                     SO.sub.2 NHCH.sub.3                       52 C.sub.2 H.sub.4 OCH.sub.3                                                                       C.sub.2 H.sub.4 OCH.sub.3                                                              NHCOCH.sub.3                                                                            SO.sub.2 NHCH.sub.3                       53 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.2 Ph                           54 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        NHCOPh   NHCOCH.sub.2 Ph                           55 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOOC.sub.2 H.sub.5                      56 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOOCH.sub.2 Ph                          57 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCOC.sub.2 H.sub.5                     58 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCSOC.sub.2 H.sub.5                      59 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCO-thienyl (2)                          60 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCO-thienyl (3)                          61 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH2-thienyl (3)                       62 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH2-thienyl (2)                       63 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCO-furyl (2)                            64 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPhCH.sub.3 (4)                        65 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh-cyclohexyl (4)                     66 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCO-pyrrolyl (1)                         67 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCO-morpholyl (1)                        68 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCO-pyrrolidonyl (1)                     69 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCO-cyclopropane                         70 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              71 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              72 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                              73 C.sub.2 H.sub.5  C.sub.2 H.sub.5                                                                        CH.sub.3 NHSO.sub.2 CH.sub.3                       74 Combining of R.sub.1 with R.sub.2                                                                       CH.sub.3 NHCOPh                                       to form ring (C.sub.5 H.sub.10)                                             75 Combining of R.sub.1 with R.sub.2                                                                       CH.sub.3 NHCOPh                                       to form ring (C.sub.2 H.sub.4OC.sub.2 H.sub.4)                              76 Combining of R.sub.1 with R.sub.2                                                                       CH.sub.3 NHCOCH.sub.3                                 to form ring (C.sub.4 H.sub.8)                                              5-a,b                                                                          77 Combining of X with R.sub.1                                                                     C.sub.2 H.sub.5                                                                        H        NHCOCH.sub.3                                 to form ring (C.sub.3 H.sub.6)                                              78 Combining of X with R.sub.1                                                                     C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                                 to form ring (C.sub.3 H.sub.6)                                              79 Combining of X with R.sub.1                                                                     C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOCH.sub.3                                 to form ring (C.sub.3 H.sub.6)                                              80 Combining of X with R.sub.1                                                                     H       CH.sub.3 NHCOCH.sub.3                                 to form ring (C.sub.3 H.sub.6)                                              81 Combining of X with R.sub.1                                                                     C.sub.2 H.sub.4 OCOCH.sub.3                                                            CH.sub.3 NHCOPh                                       to form ring (C.sub.3 H.sub.6)                                              82 Combining of X with R.sub.1                                                                     C.sub.2 H.sub.4 OCH.sub.3                                                              CH.sub.3 NHCOPh                                       to form ring (C.sub.3 H.sub.6)                                              83 Combining of X with R.sub.1                                                                     C.sub.2 H.sub.4 OCH.sub.3                                                              CH.sub.3 NHSO.sub.2 CH.sub.3                          to form ring (C.sub.3 H.sub.6)                                              84 Combining of X with R.sub.1                                                                     C.sub.2 H.sub.4 OH                                                                     OH       NHCOCH.sub.3                                 to form ring (C.sub.3 H.sub.6)                                              85 Combining of X with R.sub.1                                                                     C.sub.2 H.sub.4 CN                                                                     NHCOCH.sub.3                                                                            NHCOCH.sub.3                                 to form ring (C.sub.3 H.sub.6)                                              86 Combining of X with R.sub.1                                                                     CH.sub.3                                                                               C.sub.2 H.sub.5                                                                         NHCOOCH.sub.3                                to form ring (C.sub.3 H.sub.6)                                              87 Combining of X with R.sub.1                                                                     C.sub.2 H.sub.5                                                                        CH.sub.3 CONHCH.sub.3                                 to form ring (C.sub.3 H.sub.6)                                              88 Combining of X with R.sub.1 and                                                                         CH.sub.3 NHCOCH.sub.3                                 Y with R.sub.2 to form C.sub.3 H.sub.6                                      89 Combining of X with R.sub.1 and                                                                         NHCOCH.sub.3                                                                            NHCOPh                                       Y with R.sub.2 to form C.sub.3 H.sub.6                                      90 Combining of X with R.sub.1 and                                                                         CH.sub.3 NHCOPh                                       Y with R.sub.2 to form C.sub.3 H.sub.6                                      91 Combining of X with R.sub.1 and                                                                         C.sub.2 H.sub.5                                                                         NHCOPh                                       Y with R.sub.2 to form C.sub.3 H.sub.6                                      5-a,b,c                                                                        92 CHCH.sub.2       C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    93 CH.sub.2 CHCH.sub.2                                                                             C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    94 Ph               C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    95 cyclohexyl       C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    96 cyclopentyl      C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    97 N(C.sub.2 H.sub.5)COCH.sub.3                                                                    C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    98 N(C.sub.2 H.sub.5) COPh                                                                         C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    99 N(C.sub.2 H.sub.5) SO.sub.2 CH.sub.3                                                            C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    100                                                                               N(C.sub.2 H.sub.5)SO.sub.2 Ph                                                                   C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    101                                                                               NHCONHCH.sub.3   C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    102                                                                               N(CH.sub.3)CONHCH.sub.3                                                                         C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    103                                                                               N(C.sub.2 H.sub.5)CONHPh                                                                        C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    104                                                                               CONHCH.sub.3     C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    105                                                                               CONHC.sub.2 H.sub.5                                                                             C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    106                                                                               CON(C.sub.2 H.sub.5).sub.2                                                                      C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    107                                                                               CON(C.sub.4 H.sub.9 -n).sub.2                                                                   C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    108                                                                               SO.sub.2 NHC.sub.2 H.sub.5                                                                      C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    109                                                                               SO.sub.2 N (C.sub.4 H.sub.9 -n).sub.2                                                           C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    110                                                                               2-pyridyl        C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    111                                                                               4-pyridyl        C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    112                                                                               4-methyl-2-pyridyl                                                                              C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    113                                                                               2-thienyl        C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    114                                                                               3-thienyl        C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    115                                                                               2-furyl          C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    116                                                                               3-furyl          C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    117                                                                               2-pyrrolyl       C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    118                                                                               2-imidazolyl     C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    119                                                                               2-indolyl        C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    120                                                                               2-pyrrolidinyl   C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    121                                                                               2-imidazolidinyl C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    122                                                                               2-pyrazolidinyl  C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    123                                                                               2-piperidyl      C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    124                                                                               4-piperidyl      C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    125                                                                               morpholino       C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    126                                                                               COC.sub.2 H.sub.5                                                                               C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    127                                                                               COPh             C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    128                                                                               N(C.sub.2 H.sub.5).sub.2                                                                        C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    129                                                                               SO.sub.2 C.sub.4 H.sub.9 -n                                                                     C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    130                                                                               SO.sub.2 Ph      C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    131                                                                               2-acetylaminocyclohexyl                                                                         C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOC.sub.3 H.sub.7                       132                                                                               2-tolyl          C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOC.sub.3 H.sub.7                       133                                                                               4-tolyl          C.sub.2 H.sub.5                                                                        H        NHCOPh                                    134                                                                               4-methyl-2-pyridyl                                                                              C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    135                                                                               2-methyl-4-pyridyl                                                                              C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    136                                                                               CON(C.sub.4 H.sub.9 -n).sub.2                                                                   C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOC.sub.3 H.sub.7                       137                                                                               NHCOOC.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOC.sub.3 H.sub.7                       138                                                                               COOPh            C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOC.sub.3 H.sub.7                       139                                                                               COOCH.sub.2 Ph   C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOC.sub.3 H.sub.7                       140                                                                               NHCOO-pyridyl (2)                                                                               C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    141                                                                               COCH.sub.2 Ph    C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOC.sub.3 H.sub.7                       142                                                                               3-nicotinoyl     C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    143                                                                               2-nicotinoyl     C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    144                                                                               4-nicotinoyl     C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    145                                                                               2-thenoyl        C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    146                                                                               4-toluoyl        C.sub.2 H.sub.5                                                                        CH.sub.3 NHCOPh                                    __________________________________________________________________________     No.     R.sub.6   R.sub.7   hue  coloring density                                                                       light fastness                        __________________________________________________________________________     (5-a)                                                                          1       H         H         blue 1.85    Δ                               2       CH.sub.3  H         blue 1.82    Δ                               3       H         Cl        blue 1.76    Δ                               4       C.sub.2 H.sub.5                                                                          Cl        blue 1.68    ◯                         5       CH.sub.3  Cl        blue 1.69    ◯                         6       CH.sub.3  Cl        blue 1.83    ◯                         7       CH.sub.3  Cl        blue 1.77    ◯                         8       CH.sub.3  Cl        blue 1.72    ◯                         9       CH.sub.3  Cl        blue 1.62    ◯                         10      CH.sub.3  Cl        blue 1.63    ◯                         11      CH.sub.3  Cl        blue 1.60    ◯                         12      CH.sub.3  Cl        blue 1.73    ◯                         13      CH.sub.3  Cl        blue 1.84    ◯                         14      CH.sub.3  Cl        blue 1.69    ◯                         15      CH.sub.3  Cl        blue 1.88    ◯                         16      CH.sub.3  Cl        blue 1.80    ◯                         17      CH.sub.3  Cl        blue 1.78    ◯                         18      CH.sub.3  Cl        blue 1.63    ◯                         19      CH.sub.3  Cl        blue 1.66    ◯                         20      N(CH.sub.3).sub.2                                                                        Cl        blue 1.74    ◯                         21      N(C.sub.2 H.sub.5).sub.2                                                                 Cl        blue 1.80    ◯                         22      NHCOCH.sub.3                                                                             Cl        blue 1.82    ◯                         23      CH.sub.3  Cl        blue 1.77    ◯                         24      C.sub.2 H.sub.5                                                                          Cl        blue 1.71    ◯                         25      C.sub.2 H.sub.5                                                                          Cl        blue 1.83    ◯                         26      CH.sub.3  Cl        blue 1.66    ◯                         27      CH.sub.3  Cl        blue 1.68    ◯                         28      C.sub.2 H.sub.5                                                                          Cl        blue 1.92    ◯                         29      C.sub.2 H.sub.5                                                                          Cl        blue 1.81    ◯                         30      H         CH.sub.3  blue 2.00    Δ                               31      OH        H         blue 1.94    Δ                               32      H         H         blue 1.96    Δ                               33      CH.sub.3  Cl        blue 1.94    ◯                         34      H         H         blue 1.88    Δ                               35      CH.sub.3  H         blue 1.92    ◯                         36      CH.sub.3  Cl        blue 1.83    ◯                         37      CH.sub.3  Cl        blue 1.84    ◯                         38      CH.sub.3  Cl        blue 1.69    ◯                         39      CH.sub.3  Cl        blue 1.68    ◯                         40      CH.sub.3  Cl        blue 1.74    ◯                         41      NHCH.sub.3                                                                               Cl        blue 1.77    ◯                         42      N(CH.sub.3)2                                                                             Cl        blue 1.68    ◯                         43      NHCOCH.sub.3                                                                             Cl        blue 1.64    ◯                         44      NHPh      Cl        blue 1.63    ◯                         45      NHPh      H         blue 1.69    ◯                         46      N(C.sub.2 H.sub.5).sub.2                                                                 H         blue 1.74    ◯                         47      CONHCH.sub.3                                                                             Cl        blue 1.71    ◯                         48      CH.sub.3  Cl        blue 1.82    ◯                         49      C.sub.2 H.sub.5                                                                          Cl        blue 1.80    ◯                         50      H         CH.sub.3  blue 1.70    Δ                               51      C.sub.2 H.sub.5                                                                          H         blue 1.73    ◯                         52      CH.sub.3  Cl        blue 1.66    ◯                         53      CH.sub.3  Cl        blue 1.78    ◯                         54      CH.sub.3  Cl        blue 1.71    ◯                         55      CH.sub.3  Cl        blue 1.77    ◯                         56      CH.sub.3  Cl        blue 1.70    ◯                         57      C.sub.2 H.sub.5                                                                          CH.sub.3  blue 1.74    Δ                               58      CH.sub.3  Cl        blue 1.78    ◯                         59      CH.sub.3  Cl        blue 1.77    ◯                         60      CH.sub.3  Cl        blue 1.77    ◯                         61      CH.sub.3  Cl        blue 1.79    ◯                         62      CH.sub.3  Cl        blue 1.78    ◯                         63      CH.sub.3  Cl        blue 1.74    ◯                         64      CH.sub.3  Cl        blue 1.72    ◯                         65      CH.sub.3  Cl        blue 1.74    ◯                         66      CH.sub.3  Cl        blue 1.77    ◯                         67      CH.sub.3  Cl        blue 1.68    ◯                         68      CH.sub.3  Cl        blue 1.71    ◯                         69      CH.sub.3  Cl        blue 1.88    ◯                         70      Cl        Cl        blue 1.74    ◯                         71      Cl        CH.sub.3  blue 1.83    ◯                         72      CH.sub.3  NHCOCH.sub.3                                                                             blue 1.78    Δ                               73      CH.sub.3  NHCOCH.sub.3                                                                             blue 1.72    Δ                               74      CH.sub.3  Cl        blue 1.78    ◯                         75      CH.sub.3  Cl        blue 1.74    ◯                         76      CH.sub.3  Cl        blue 1.76    ◯                         77      CH.sub.3  Cl        blue 1.84    ◯                         78      H         H         blue 1.96    Δ                               79      CH.sub.3  H         blue 1.90    Δ                               80      CH.sub.3  Cl        blue 1.88    ◯                         81      CH.sub.3  Cl        blue 1.72    ◯                         82      CH.sub.3  Cl        blue 1.84    ◯                         83      C.sub.2 H.sub.5                                                                          Cl        blue 1.79    ◯                         84      CH.sub.3  Cl        blue 1.84    ◯                         85      CH.sub.3  Cl        blue 1.72    ◯                         86      N(C.sub.2 H.sub.5).sub.2                                                                 Cl        blue 1.75    ◯                         87      CH.sub.3  Cl        blue 1.80    ◯                         92      CH.sub.3  Cl        blue 1.66    ◯                         93      CH.sub.3  Cl        blue 1.73    ◯                         94      CH.sub.3  Cl        blue 1.81    ◯                         95      CH.sub.3  Cl        blue 1.76    ◯                         96      CH.sub.3  Cl        blue 1.53    ◯                         97      CH.sub.3  Cl        blue 1.63    ◯                         98      CH.sub.3  Cl        blue 1.64    ◯                         99      CH.sub.3  Cl        blue 1.57    ◯                         100     CH.sub.3  Cl        blue 1.82    ◯                         101     CH.sub.3  Cl        blue 1.79    ◯                         102     CH.sub.3  Cl        blue 1.68    ◯                         103     CH.sub.3  Cl        blue 1.65    ◯                         104     CH.sub.3  Cl        blue 1.55    ◯                         105     CH.sub.3  Cl        blue 1.71    ◯                         106     CH.sub.3  Cl        blue 1.74    ◯                         107     CH.sub.3  Cl        blue 1.74    ◯                         108     CH.sub.3  Cl        blue 1.68    ◯                         109     CH.sub.3  Cl        blue 1.76    ◯                         110     CH.sub.3  Cl        blue 1.88    ◯                         111     CH.sub.3  Cl        blue 1.84    ◯                         112     CH.sub.3  Cl        blue 1.83    ◯                         113     CH.sub.3  Cl        blue 1.85    ◯                         114     CH.sub.3  Cl        blue 1.77    ◯                         115     CH.sub.3  Cl        blue 1.64    ◯                         116     CH.sub.3  Cl        blue 1.58    ◯                         117     CH.sub.3  Cl        blue 1.78    ◯                         118     CH.sub.3  Cl        blue 1.55    ◯                         119     CH.sub.3  Cl        blue 1.61    ◯                         120     CH.sub.3  Cl        blue 1.72    ◯                         121     CH.sub.3  Cl        blue 1.71    ◯                         122     CH.sub.3  Cl        blue 1.63    ◯                         123     CH.sub.3  Cl        blue 1.69    ◯                         124     CH.sub.3  Cl        blue 1.52    ◯                         125     CH.sub.3  Cl        blue 1.84    ◯                         126     CH.sub.3  Cl        blue 1.77    ◯                         127     CH.sub.3  Cl        blue 1.68    ◯                         128     CH.sub.3  Cl        blue 1.75    ◯                         129     CH.sub.3  Cl        blue 1.64    ◯                         130     CH.sub.3  Cl        blue 1.63    ◯                         131     CH.sub.3  Cl        blue 1.66    ◯                         132     CH.sub.3  Cl        blue 1.69    ◯                         133     CH.sub.3  Cl        blue 1.74    ◯                         134     CH.sub.3  Cl        blue 1.77    ◯                         135     CH.sub.3  Cl        blue 1.83    ◯                         136     CH.sub.3  Cl        blue 1.82    ◯                         137     CH.sub.3  Cl        blue 1.84    ◯                         138     CH.sub.3  Cl        blue 1.86    ◯                         139     CH.sub.3  Cl        blue 1.73    ◯                         140     CH.sub.3  Cl        blue 1.71    ◯                         141     CH.sub.3  Cl        blue 1.68    ◯                         142     CH.sub.3  Cl        blue 1.73    ◯                         143     CH.sub.3  Cl        blue 1.77    ◯                         144     CH.sub.3  Cl        blue 1.65    ◯                         (5-b)                                                                          1       H         H         blue 1.84    Δ                               2       CH.sub.3  H         blue 1.83    Δ                               3       H         Cl        blue 1.78    Δ                               4       C.sub.2 H.sub.5                                                                          Cl        blue 1.70    ◯                         5       CH.sub.3  Cl        blue 1.66    ◯                         6       CH.sub.3  Cl        blue 1.81    ◯                         7       CH.sub.3  Cl        blue 1.75    ◯                         8       CH.sub.3  Cl        blue 1.76    ◯                         9       CH.sub.3  Cl        blue 1.64    ◯                         10      CH.sub.3  Cl        blue 1.60    ◯                         11      CH.sub.3  Cl        blue 1.62    ◯                         12      CH.sub.3  Cl        blue 1.75    ◯                         13      CH.sub.3  Cl        blue 1.82    ◯                         14      CH.sub.3  Cl        blue 1.70    ◯                         15      CH.sub.3  Cl        blue 1.88    ◯                         16      CH.sub.3  Cl        blue 1.82    ◯                         17      CH.sub.3  Cl        blue 1.81    ◯                         18      CH.sub.3  Cl        blue 1.66    ◯                         19      CH.sub.3  Cl        blue 1.67    ◯                         20      N(CH.sub.3).sub.2                                                                        Cl        blue 1.76    ◯                         21      N(C.sub.2 H.sub.5).sub.2                                                                 Cl        blue 1.77    ◯                         22      NHCOCH.sub.3                                                                             Cl        blue 1.79    ◯                         23      CH.sub.3  Cl        blue 1.80    ◯                         24      C.sub.2 H.sub.5                                                                          Cl        blue 1.70    ◯                         25      C.sub.2 H.sub.5                                                                          Cl        blue 1.81    ◯                         26      CH.sub.3  Cl        blue 1.72    ◯                         27      CH.sub.3  Cl        blue 1.71    ◯                         28      C.sub.2 H.sub.5                                                                          Cl        blue 1.84    ◯                         29      C.sub.2 H.sub.5                                                                          Cl        blue 1.80    ◯                         30      H         CH.sub.3  blue 1.90    Δ                               31      OH        H         blue 1.91    Δ                               32      H         H         blue 1.94    Δ                               33      CH.sub.3  Cl        blue 1.90    ◯                         34      H         H         blue 1.90    Δ                               35      CH.sub.3  H         blue 1.88    ◯                         36      CH.sub.3  Cl        blue 1.80    ◯                         37      CH.sub.3  Cl        blue 1.83    ◯                         38      CH.sub.3  Cl        blue 1.67    ◯                         39      CH.sub.3  Cl        blue 1.69    ◯                         41      NHCH.sub.3                                                                               Cl        blue 1.75    ◯                         42      N(CH.sub.3).sub.2                                                                        Cl        blue 1.70    ◯                         43      NHCOCH.sub.3                                                                             Cl        blue 1.66    ◯                         44      NHPh      Cl        blue 1.65    ◯                         45      NHPh      H         blue 1.72    ◯                         46      N(C.sub.2 H.sub.5).sub.2                                                                 H         blue 1.76    ◯                         47      CONHCH.sub.3                                                                             Cl        blue 1.73    ◯                         48      CH.sub.3  Cl        blue 1.80    ◯                         49      C.sub.2 H.sub.5                                                                          Cl        blue 1.78    ◯                         50      H         CH.sub.3  blue 1.66    Δ                               51      C.sub.2 H.sub.5                                                                          H         blue 1.74    ◯                         52      CH.sub.3  Cl        blue 1.70    ◯                         53      CH.sub.3  Cl        blue 1.72    ◯                         54      CH.sub.3  Cl        blue 1.74    ◯                         55      CH.sub.3  Cl        blue 1.73    ◯                         56      CH.sub.3  Cl        blue 1.74    ◯                         57      C.sub.2 H.sub.5                                                                          CH.sub.3  blue 1.76    Δ                               58      CH.sub.3  Cl        blue 1.81    ◯                         59      CH.sub.3  Cl        blue 1.82    ◯                         60      CH.sub.3  Cl        blue 1.80    ◯                         61      CH.sub.3  Cl        blue 1.74    ◯                         62      CH.sub.3  Cl        blue 1.79    ◯                         63      CH.sub.3  Cl        blue 1.73    ◯                         64      CH.sub.3  Cl        blue 1.77    ◯                         65      CH.sub.3  Cl        blue 1.72    ◯                         66      CH.sub.3  Cl        blue 1.80    ◯                         67      CH.sub.3  Cl        blue 1.71    ◯                         68      CH.sub.3  Cl        blue 1.69    ◯                         69      CH.sub.3  Cl        blue 1.87    ◯                         70      Cl        Cl        blue 1.78    ◯                         71      Cl        CH.sub.3  blue 1.80    ◯                         72      CH.sub.3  NHCOCH.sub.3                                                                             blue 1.76    Δ                               73      CH.sub.3  NHCOCH.sub.3                                                                             blue 1.77    Δ                               74      CH.sub.3  Cl        blue 1.72    ◯                         75      CH.sub.3  Cl        blue 1.75    ◯                         76      CH.sub.3  Cl        blue 1.76    ◯                         77      CH.sub.3  Cl        blue 1.83    ◯                         78      H         H         blue 2.00    Δ                               79      CH.sub.3  H         blue 1.93    Δ                               80      CH.sub.3  Cl        blue 1.90    ◯                         81      CH.sub.3  Cl        blue 1.78    ◯                         82      CH.sub.3  Cl        blue 1.83    ◯                         83      C.sub.2 H.sub.5                                                                          Cl        blue 1.80    ◯                         84      CH.sub.3  Cl        blue 1.79    ◯                         85      CH.sub.3  Cl        blue 1.74    ◯                         86      N(C.sub.2 H.sub.5).sub.2                                                                 Cl        blue 1.77    ◯                         87      CH.sub.3  Cl        blue 1.83    ◯                         92      CH.sub.3  Cl        blue 1.81    ◯                         93      CH.sub.3  Cl        blue 1.88    ◯                         94      CH.sub.3  Cl        blue 1.73    ◯                         95      CH.sub.3  Cl        blue 1.70    ◯                         96      CH.sub.3  Cl        blue 1.84    ◯                         97      CH.sub.3  Cl        blue 1.74    ◯                         98      CH.sub.3  Cl        blue 1.49    ◯                         99      CH.sub.3  Cl        blue 1.81    ◯                         100     CH.sub.3  Cl        blue 1.76    ◯                         101     CH.sub.3  Cl        blue 1.82    ◯                         102     CH.sub.3  Cl        blue 1.77    ◯                         103     CH.sub.3  Cl        blue 1.75    ◯                         104     CH.sub.3  Cl        blue 1.82    ◯                         105     CH.sub.3  Cl        blue 1.66    ◯                         106     CH.sub.3  Cl        blue 1.60    ◯                         107     CH.sub.3  Cl        blue 1.70    ◯                         108     CH.sub.3  Cl        blue 1.63    ◯                         109     CH.sub.3  Cl        blue 1.71    ◯                         110     CH.sub.3  Cl        blue 1.80    ◯                         111     CH.sub.3  Cl        blue 1.59    ◯                         112     CH.sub.3  Cl        blue 1.60    ◯                         113     CH.sub.3  Cl        blue 1.63    ◯                         114     CH.sub.3  Cl        blue 1.72    ◯                         115     CH.sub.3  Cl        blue 1.78    ◯                         116     CH.sub.3  Cl        blue 1.75    ◯                         117     CH.sub.3  Cl        blue 1.75    ◯                         118     CH.sub.3  Cl        blue 1.62    ◯                         119     CH.sub.3  Cl        blue 1.66    ◯                         120     CH.sub.3  Cl        blue 1.69    ◯                         121     CH.sub.3  Cl        blue 1.81    ◯                         122     CH.sub.3  Cl        blue 1.56    ◯                         123     CH.sub.3  Cl        blue 1.53    ◯                         124     CH.sub.3  Cl        blue 1.73    ◯                         125     CH.sub.3  Cl        blue 1.70    ◯                         126     CH.sub.3  Cl        blue 1.65    ◯                         127     CH.sub.3  Cl        blue 1.58    ◯                         128     CH.sub.3  Cl        blue 1.59    ◯                         129     CH.sub.3  Cl        blue 1.81    ◯                         130     CH.sub.3  Cl        blue 1.77    ◯                         131     CH.sub.3  Cl        blue 1.74    ◯                         132     CH.sub.3  Cl        blue 1.69    ◯                         133     CH.sub.3  Cl        blue 1.58    ◯                         134     CH.sub.3  Cl        blue 1.80    ◯                         135     CH.sub.3  Cl        blue 1.66    ◯                         136     CH.sub.3  Cl        blue 1.74    ◯                         137     CH.sub.3  Cl        blue 1.78    ◯                         138     CH.sub.3  Cl        blue 1.77    ◯                         139     CH.sub.3  Cl        blue 1.74    ◯                         140     CH.sub.3  Cl        blue 1.70    ◯                         141     CH.sub.3  Cl        blue 1.65    ◯                         142     CH.sub.3  Cl        blue 1.66    ◯                         143     CH.sub.3  Cl        blue 1.70    ◯                         144     CH.sub.3  Cl        blue 1.75    ◯                         (5-c)                                                                          1       H         H         blue 1.82    Δ                               2       CH.sub.3  H         blue 1.78    Δ                               3       H         Cl        blue 1.80    Δ                               4       C.sub.2 H.sub.5                                                                          Cl        blue 1.70    ◯                         5       CH.sub.3  Cl        blue 1.72    ◯                         6       CH.sub.3  Cl        blue 1.77    ◯                         7       CH.sub.3  Cl        blue 1.72    ◯                         8       CH.sub.3  Cl        blue 1.68    ◯                         9       CH.sub.3  Cl        blue 1.58    ◯                         10      CH.sub.3  Cl        blue 1.57    ◯                         11      CH.sub.3  Cl        blue 1.62    ◯                         12      CH.sub.3  Cl        blue 1.64    ◯                         13      CH.sub.3  Cl        blue 1.79    ◯                         14      CH.sub.3  Cl        blue 1.67    ◯                         15      CH.sub.3  Cl        blue 1.82    ◯                         16      CH.sub.3  Cl        blue 1.77    ◯                         17      CH.sub.3  Cl        blue 1.72    ◯                         18      CH.sub.3  Cl        blue 1.61    ◯                         19      CH.sub.3  Cl        blue 1.59    ◯                         20      N(CH.sub.3).sub.2                                                                        Cl        blue 1.70    ◯                         21      N(C.sub.2 H.sub.5).sub.2                                                                 Cl        blue 1.73    ◯                         22      NHCOCH.sub.3                                                                             Cl        blue 1.79    ◯                         23      CH.sub.3  Cl        blue 1.73    ◯                         24      C.sub.2 H.sub.5                                                                          Cl        blue 1.68    ◯                         25      C.sub.2 H.sub.5                                                                          Cl        blue 1.79    ◯                         26      CH.sub.3  Cl        blue 1.62    ◯                         27      CH.sub.3  Cl        blue 1.60    ◯                         28      C.sub.2 H.sub.5                                                                          Cl        blue 1.83    ◯                         29      C.sub.2 H.sub.5                                                                          Cl        blue 1.84    ◯                         30      H         CH.sub.3  blue 1.86    Δ                               31      OH        H         blue 1.83    Δ                               32      H         H         blue 1.79    Δ                               33      CH.sub.3  Cl        blue 1.78    ◯                         34      H         H         blue 1.75    Δ                               35      CH.sub.3  H         blue 1.77    ◯                         36      CH.sub.3  Cl        blue 1.76    ◯                         37      CH.sub.3  Cl        blue 1.72    ◯                         38      CH.sub.3  Cl        blue 1.57    ◯                         39      CH.sub.3  Cl        blue 1.55    ◯                         40      CH.sub.3  Cl        blue 1.61    ◯                         41      NHCH.sub.3                                                                               Cl        blue 1.72    ◯                         42      N(CH.sub.3).sub.2                                                                        Cl        blue 1.60    ◯                         43      NHCOCH.sub.3                                                                             Cl        blue 1.62    ◯                         44      NHPh      Cl        blue 1.55    ◯                         45      NHPh      H         blue 1.58    ◯                         46      N(C.sub.2 H.sub.5).sub.2                                                                 H         blue 1.61    ◯                         47      CONHCH.sub.3                                                                             Cl        blue 1.68    ◯                         48      CH.sub.3  Cl        blue 1.77    ◯                         49      C.sub.2 H.sub.5                                                                          Cl        blue 1.72    ◯                         59      H         CH.sub.3  blue 1.61    ◯                         51      C.sub.2 H.sub.5                                                                          H         blue 1.62    ◯                         52      CH.sub.3  Cl        blue 1.58    ◯                         53      CH.sub.3  Cl        blue 1.71    ◯                         54      CH.sub.3  Cl        blue 1.62    ◯                         55      CH.sub.3  Cl        blue 1.60    ◯                         56      CH.sub.3  Cl        blue 1.63    ◯                         57      C.sub.2 H.sub.5                                                                          CH.sub.3  blue 1.66    Δ                               58      CH.sub.3  Cl        blue 1.69    ◯                         59      CH.sub.3  Cl        blue 1.70    ◯                         60      CH.sub.3  Cl        blue 1.68    ◯                         61      CH.sub.3  Cl        blue 1.72    ◯                         62      CH.sub.3  Cl        blue 1.69    ◯                         63      CH.sub.3  Cl        blue 1.62    ◯                         64      CH.sub.3  Cl        blue 1.58    ◯                         65      CH.sub.3  Cl        blue 1.57    ◯                         66      CH.sub.3  Cl        blue 1.55    ◯                         67      CH.sub.3  Cl        blue 1.51    ◯                         68      CH.sub.3  Cl        blue 1.63    ◯                         69      CH.sub.3  Cl        blue 1.71    ◯                         70      Cl        Cl        blue 1.73    ◯                         71      Cl        CH.sub.3  blue 1.72    ◯                         72      CH.sub.3  NHCOCH.sub.3                                                                             blue 1.68    Δ                               73      CH.sub.3  NHCOCH.sub.3                                                                             blue 1.61    Δ                               74      CH.sub.3  Cl        blue 1.69    ◯                         75      CH.sub.3  Cl        blue 1.63    ◯                         76      CH.sub.3  Cl        blue 1.60    ◯                         77      --        --        --   --      --                                    78      --        --        --   --      --                                    15      --        --        --   --      --                                    79      --        --        --   --      --                                    80      --        --        --   --      --                                    81      --        --        --   --      --                                    20      --        --        --   --      --                                    84      --        --        --   --      --                                    85      --        --        --   --      --                                    86      --        --        --   --      --                                    88      CH.sub.3  Cl        blue 1.75    ◯                         89      C.sub.2 H.sub.5                                                                          Cl        blue 1.63    ◯                         90      Cl        Cl        blue 1.66    Δ                               91      CH.sub.3  Cl        blue 1.70    ◯                         92      CH.sub.3  Cl        blue 1.72    ◯                         93      CH.sub.3  Cl        blue 1.66    ◯                         94      CH.sub.3  Cl        blue 1.79    ◯                         95      CH.sub.3  Cl        blue 1.69    ◯                         96      CH.sub.3  Cl        blue 1.71    ◯                         97      CH.sub.3  Cl        blue 1.73    ◯                         98      CH.sub.3  Cl        blue 1.73    ◯                         99      CH.sub.3  Cl        blue 1.76    ◯                         100     CH.sub.3  Cl        blue 1.68    ◯                         101     CH.sub.3  Cl        blue 1.63    ◯                         102     CH.sub.3  Cl        blue 1.57    ◯                         103     CH.sub.3  Cl        blue 1.64    ◯                         104     CH.sub.3  Cl        blue 1.63    ◯                         105     CH.sub.3  Cl        blue 1.81    ◯                         106     CH.sub.3  Cl        blue 1.78    ◯                         107     CH.sub.3  Cl        blue 1.68    ◯                         108     CH.sub.3  Cl        blue 1.64    ◯                         109     CH.sub.3  Cl        blue 1.71    ◯                         11O     CH.sub.3  Cl        blue 1.84    ◯                         111     CH.sub.3  Cl        blue 1.83    ◯                         112     CH.sub.3  Cl        blue 1.80    ◯                         113     CH.sub.3  Cl        blue 1.73    ◯                         114     CH.sub.3  Cl        blue 1.58    ◯                         115     CH.sub.3  Cl        blue 1.66    ◯                         116     CH.sub.3  Cl        blue 1.53    ◯                         117     CH.sub.3  Cl        blue 1.71    ◯                         118     CH.sub.3  Cl        blue 1.82    ◯                         119     CH.sub.3  Cl        blue 1.73    ◯                         120     CH.sub.3  Cl        blue 1.66    ◯                         121     CH.sub.3  Cl        blue 1.81    ◯                         122     CH.sub.3  Cl        blue 1.77    ◯                         123     CH.sub.3  Cl        blue 1.76    ◯                         124     CH.sub.3  Cl        blue 1.73    ◯                         125     CH.sub.3  Cl        blue 1.78    ◯                         126     CH.sub.3  Cl        blue 1.61    ◯                         127     CH.sub.3  Cl        blue 1.79    ◯                         128     CH.sub.3  Cl        blue 1.78    ◯                         i29     CH.sub.3  Cl        blue 1.84    ◯                         130     CH.sub.3  Cl        blue 1.75    ◯                         131     CH.sub.3  Cl        blue 1.73    ◯                         132     CH.sub.3  Cl        blue 1.55    ◯                         133     CH.sub.3  Cl        blue 1.51    ◯                         134     CH.sub.3  Cl        blue 1.59    ◯                         135     CH.sub.3  Cl        blue 1.88    ◯                         136     CH.sub.3  Cl        blue 1.86    ◯                         137     CH.sub.3  Cl        blue 1.74    ◯                         138     CH.sub.3  Cl        blue 1.70    ◯                         139     CH.sub.3  Cl        blue 1.80    ◯                         140     CH.sub.3  Cl        blue 1.69    ◯                         141     CH.sub.3  Cl        blue 1.57    ◯                         142     CH.sub.3  Cl        blue 1.74    ◯                         143     CH.sub.3  Cl        blue 1.59    ◯                         144     CH.sub.3  Cl        blue 1.70    ◯                         __________________________________________________________________________

(6) Dyes having the following structure: ##STR16## wherein R₄ to R₉ stand for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group, alkoxy group, amino group, ureido group, --CON(R₁₀)(R₁₁), --CSN(R₁₀)(R₁₁), --SO₂ N(R₁₁)(R₁₁), --COOR₁₀ or --CSOR₁₀ wherein R₁₀ and R₁₁ stand for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group, cycloalkyl group, aryl group, vinyl group, ally group, cycloalkyl group or aromatic heterocyclic group, provided that R₁₀ and R₁₁ may combine with each other to form a ring.

Specific examples of the dyes represented by the general formula 6 and the performance thereof in the case of use in a thermal transfer sheet which will be described later are given in the following Table 6.

                                      TABLE 6                                      __________________________________________________________________________      ##STR17##                                                                      ##STR18##                                                                      ##STR19##                                                                     No.                                                                               R.sub.1     R.sub.2   R.sub.3  R.sub.4                                      __________________________________________________________________________     6 common to a to c                                                             1  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            2  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            3  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CH.sub.3                                     4  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        NHCOC.sub.3 H.sub.7                          5  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 6  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 NHSO.sub.2 CH.sub.3                          7  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 SO.sub.2 NHCH.sub.3                          8  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-2-toluyl                                9  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        CONH-2-toluyl                                10 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        CONH-3-(2-ethylpyridyl)                      11 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            SO.sub.2 NHCH.sub.3                          12 C.sub.2 H.sub.4 OH                                                                         C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 13 C.sub.2 H.sub.4 CN                                                                         C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 14 C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 15 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 16 C.sub.2 H.sub.4 OCOPh                                                                      C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 17 C.sub.2 H.sub.4 OCOOCH.sub.3                                                               C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 18 C.sub.2 H.sub.4 OCOOPh                                                                     C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 19 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.4 OCOCH.sub.3                                                              CH.sub.3 CONHCH.sub.3                                 20 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.4 OCOCH.sub.3                                                              CH.sub.3 CONHPh                                       21 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHC.sub.3 H6OH                             22 C.sub.4 H.sub.9                                                                            C.sub.4 H.sub.9                                                                          CH.sub.3 CONHCH.sub.3                                 23 C.sub.2 H.sub.4 OC.sub.2 H.sub.4 OCH.sub.3                                                 C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 24 C.sub.4 H.sub.8 OH                                                                         C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 25 C.sub.2 H.sub.4 OCH.sub.2 Ph                                                               C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CONHCH.sub.3                                 26 C.sub.2 H.sub.4 O-cyclohexyl                                                               C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 27 C.sub.2 H.sub.4 OPh                                                                        C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                 28 C.sub.2 H.sub.4 OPh                                                                        C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CONHCH.sub.3                                 29 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 Cl                                           30 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        Cl                                           31 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            Cl                                           32 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHSO.sub.2 CH.sub.3                                                                     Cl                                           33 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOC.sub.2 H.sub.5                                                                     CONHCH.sub.3                                 34 C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                          NHCOC.sub.2 H.sub.5                                                                     CONHCH.sub.3                                 35 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          NHCOC.sub.2 H.sub.5                                                                     CONHCH.sub.3                                 36 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCON(C.sub.2 H.sub.5).sub.2                                                            CONHCH.sub.3                                 37 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCONHCH.sub.3                                                                          CONHCH.sub.3                                 38 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCOC.sub.2 H.sub.5                                                                   CONHCH.sub.3                                 39 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOOCH.sub.3                                                                           CONHCH.sub.3                                 40 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.2 Ph                                                                         CONHCH.sub.3                                 41 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOPh   CONHCH.sub.3                                 42 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHSO.sub.2 C.sub.2 H.sub.5                                                              CONHCH.sub.3                                 43 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHSO.sub.2 NHCH.sub.3                                                                   CONHCH.sub.3                                 44 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CONHCOCH.sub.3                                                                          CONHCH.sub.3                                 45 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CONHCH.sub.3                                    X = CN (a,b)                                                                   Y = CN (c)                                                                  46 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CONHCH.sub.3                                    X = NHCOCH.sub.3 (a,b)                                                         Y = NHCOCH.sub.3 (c)                                                        47 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                    X = CN (a,b)                                                                   Y = CN (c)                                                                  48 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                    X = NHCOCH.sub.3 (a,b)                                                         Y = NHCOCH.sub.3 (c)                                                        49 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 NHCH.sub.3                                   50 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 N(CH.sub.3).sub.2                            51 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            N(C.sub.2 H.sub.5).sub.2                     52 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHSO.sub.2 CH.sub.3                                                                     N(C.sub.2 H.sub.5).sub.2                     53 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OH       OH                                           54 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OH       NHCOCH.sub.3                                 55 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OH       CONHCH.sub.3                                 56 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OH       NHCOPh                                       57 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OH       CONHPh                                       58 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OH       CONH-cyclohexyl                              59 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OH       CONHCH.sub.2 Ph                              60 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OH       CONHC.sub.2 H.sub.5                          61 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OCH.sub.3                                                                               CONHCH.sub.3                                 62 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OCH.sub.3                                                                               NHCOPh                                       63 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OCH.sub.3                                                                               CONHPh                                       64 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          OCH.sub.3                                                                               NHCOCH.sub.3                                    X = CN (a,b)                                                                   Y = CN (c)                                                                  65 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          Cl       Cl                                           66 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          Cl       CONHCH.sub.3                                 67 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                    R.sub.9 = CH.sub.3                                                          68 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                    R.sub.9 = NH.sub.2                                                          69 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                    R.sub.9 = NHCH.sub.3                                                        70 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.3                                    R.sub.9 = CH                                                                71 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-thienyl(3)                              72 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-thienyl(2)                              73 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-furyl(2)                                74 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 COOCH.sub.3                                  75 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.2 -thienyl(2)                     76 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHCH.sub.2 -thieny1(3)                     77 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 NHCO-thieny1(3)                              78 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 NHCO-thieny1(2)                              79 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 NHCOCH.sub.2 -thienyl(2)                     80 C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-thienyl(2)                              81 C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.4 OCH.sub.3                                                                CH.sub.3 CONH-thienyl(2)                              82 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-thienyl(2)                              83 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.4 OCOCH.sub.3                                                              CH.sub.3 CONH-thieny1(2)                              84 C.sub.2 H.sub.4 CN                                                                         C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-thienyl(2)                              85 C.sub.2 H.sub.4 OH                                                                         C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-thienyl(2)                              86 C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CONH-thienyl(2)                              87 C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.4 OCH.sub.3                                                                NHCOCH.sub.3                                                                            CONH-thieny1(2)                              88 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CONH-thienyl(2)                                 X = CN (a,b)                                                                   Y = CN (c)                                                                  89 C.sub.2 H.sub.4 COOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CONHCH.sub.3                                 90 C.sub.2 H.sub.4 COOCH.sub.3                                                                C.sub.2 H.sub.4 COOCH.sub.3                                                              CH.sub.3 CONHCH.sub.3                                 91 C.sub.2 H.sub.4 COOCH.sub.3                                                                C.sub.2 H.sub.4 COOCH.sub.3                                                              NHCOCH.sub.3                                                                            CONHCH.sub.3                                 92 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHNHCH.sub.3                               93 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-piperidyl(1)                            94 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-morpholyl(1)                            95 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONH-bicyclo 2,2,1!-hepto-2-yl               96 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 NHCO-bicyclo 2,2,1!-hepto-2-yl               97 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CONH-piperidyl(1)                            98 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOC.sub.2 H.sub.5                                                                     CONH-morpholyl(1)                            99 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CONH-pyrrolidolyl(1)                         100                                                                               C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CO-pyrrolidolyl(1)                           101                                                                               C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CO-pyrrolidolyl(1)                           102                                                                               C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CONHCH.sub.3                                                                            CONHCH.sub.3                                 103                                                                               C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          SO.sub.2 NHCH.sub.3                                                                     CONHCH.sub.3                                 104                                                                               combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          CCH.sub.3                                                                               CONHCH.sub.3                                    with X to form                                                                 (C.sub.3 H.sub.6)                                                              in the case of (c),                                                            a ring is formed also                                                          through combining of Y                                                         with R.sub.2                                                                105                                                                               combining of R.sub.1                                                                       C.sub.2 H.sub.4 OCH.sub.3                                                                CH.sub.3 CONHCH.sub.3                                    with X to form                                                                 (C.sub.3 H.sub.6)                                                           106                                                                               combining of R.sub.1                                                                       C.sub.2 H.sub.4 OCOCH.sub.3                                                              CH.sub.3 CONHCH.sub.3                                    with X to form                                                                 (C.sub.3 H.sub.6)                                                           107                                                                               combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            CONHCH.sub.3                                    with X to form                                                                 (C.sub.3 H.sub.6)                                                           108                                                                               combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                          with X to form                                                                 (C.sub.3 H.sub.6)                                                           109                                                                               combining of R.sub.1                                                                       H         CH.sub.3 CONHPh                                          with X to form                                                                 (C.sub.3 H.sub.6)                                                           110                                                                               combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          CC.sub.2 H.sub.5                                                                        CONHPh                                          with X to form                                                                 (C.sub.3 H.sub.6)                                                           111                                                                               combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          OC.sub.2 H.sub.5                                                                        NHCOPh                                          with X to form                                                                 (C.sub.3 H.sub.6)                                                           112                                                                               combining of R.sub.1 with R.sub.2 to form (C.sub.5 H.sub.10)                                         CH.sub.3 CONHCH.sub.3                                 113                                                                               combining of R.sub.1 with R.sub.2 to form                                                            CH.sub.3 CONHCH.sub.3                                    (C.sub.2 H.sub.4 OC.sub.2 H.sub.4 )                                         114                                                                               combining of R.sub.1 with R.sub.2 to form (C.sub.5 H.sub.10)                                         NHCOCH.sub.3                                                                            CONHCH.sub.3                                 115                                                                               combining of R.sub.1 with R.sub.2 to form (C.sub.5 H.sub.10)                                         CH.sub.3 CONHPh                                       116                                                                               combining of R.sub.1 with R.sub.2 to form (C.sub.5 H.sub.10)                                         NHCOCH.sub.3                                                                            CONHPh                                       6-c                                                                            117                                                                               combining of X with R.sub.1 to form (C.sub.3 H.sub.6),                                               CH.sub.3 CONHCH.sub.3                                    combining of Y with R.sub.2 to form (C.sub.3 H.sub.6)                       118                                                                               combining of X with R.sub.1 to form (C.sub.3 H.sub.6),                                               NHCOCH.sub.3                                                                            CONHPh                                          combining of Y with R.sub.2 to form (C.sub.3 H.sub.6)                       119                                                                               combining of X with R.sub.1 to form (C.sub.3 H.sub.6),                                               CH.sub.3 CONHCH.sub.2 Ph                                 combining of Y with R.sub.2 to form (C.sub.3 H.sub.6)                       120                                                                               combining of X with R.sub.1 to form (C.sub.3 H.sub.6),                                               NHSO.sub.2 CH.sub.3                                                                     CONH-isoC.sub.3 H.sub.7                         combining of Y with R.sub.2 to form (C.sub.3 H.sub.6)                       6 a,b,c                                                                        121                                                                            cyclohexyl     C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       122                                                                               2-acetylaminocyclohexyl                                                                    C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       123                                                                               cyclopentyl C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       124                                                                               CHCH.sub.2  C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       125                                                                               CH.sub.2 CHCH.sub.2                                                                        C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       126                                                                               N(C.sub.2 H.sub.5)COPh                                                                     C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       127                                                                               N(C.sub.2 H.sub.5)SO.sub.2 CH.sub.3                                                        C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       128                                                                               NHCONHPh    C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       129                                                                               CON(C.sub.4 H.sub.9 -n).sub.2                                                              C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       130                                                                               SO.sub.2 NHPh                                                                              C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       131                                                                               3-pyridyl   C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       132                                                                               2-thienyl   C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       133                                                                               phenyl      C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       134                                                                               2-pyrrolyl  C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       135                                                                               2-imidazolyl                                                                               C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       136                                                                               2-pyrrolidinyl                                                                             C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       137                                                                               2-imidazolidinyl                                                                           C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       138                                                                               2-pyrazolidinyl                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       139                                                                               4-piperidyl C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       140                                                                               morpholino  C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       141                                                                               COPh        C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       142                                                                               SO.sub.2 Ph C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       143                                                                               2-tolyl     C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       144                                                                               COOPh       C.sub.2 H.sub.5                                                                          CH.sub.3 CONHPh                                       145                                                                               NHCOOCH.sub.2 Ph                                                                           C.sub.2 H.sub.5                                                                          CH.sub.3 NHCOPh                                       146                                                                               COCH.sub.2 Ph                                                                              C.sub.2 H.sub.5                                                                          CH.sub.3 NHCOPh                                       147                                                                               2-nicotinoyl                                                                               C.sub.2 H.sub.5                                                                          CH.sub.3 NHCOPh                                       148                                                                               4-toluoyl   C.sub.2 H.sub.5                                                                          CH.sub.3 NHCOPh                                       __________________________________________________________________________     No.      hue            coloring density                                                                       light fastness                                 __________________________________________________________________________     (6-a)                                                                          1        blue           2.10    Δ                                        2        blue           2.21    Δ                                        3        blue           1.88    Δ                                        A        blue           1.92    ◯                                  5        blue           1.76    ◯                                  6        blue           1.81    Δ                                        7        blue           1.78    Δ                                        8        blue           1.77    ◯                                  9        blue           1.78    ◯                                  10       blue           1.63    ◯                                  11       blue           1.72    ◯                                  12       blue           1.73    Δ                                        13       blue           1.97    Δ                                        14       blue           1.84    Δ                                        15       blue           1.78    Δ                                        16       blue           1.80    ◯                                  17       blue           1.91    ◯                                  18       blue           1.82    ◯                                  19       blue           1.76    ◯                                  20       blue           1.83    ◯                                  21       blue           1.78    ◯                                  22       blue           1.78    Δ                                        23       blue           1.79    Δ                                        24       blue           1.69    Δ                                        25       blue           1.72    Δ                                        26       blue           1.74    ◯                                  27       blue           1.87    ◯                                  28       blue           1.78    Δ                                        29       blue           1.77    ◯                                  30       blue           1.77    Δ                                        31       blue           1.79    Δ                                        32       blue           1.84    Δ                                        33       blue           1.77    Δ                                        34       blue           1.80    Δ                                        35       blue           1.70    Δ                                        36       blue           1.80    Δ                                        37       blue           1.81    Δ                                        38       blue           1.73    Δ                                        39       blue           1.79    Δ                                        40       blue           1.66    Δ                                        41       blue           1.75    Δ                                        42       blue           1.54    Δ                                        43       blue           1.61    Δ                                        44       blue           1.71    Δ                                        45       blue           1.74    Δ                                        46       blue           1.69    ◯                                  47       blue           1.66    ◯                                  48       blue           1.72    ◯                                  49       blue           1.73    Δ                                        50       blue           1.81    Δ                                        51       blue           1.72    Δ                                        52       blue           1.75    Δ                                        53       blue           1.75    Δ                                        54       blue           1.72    Δ                                        55       blue           1.77    Δ                                        56       blue           1.80    Δ                                        57       blue           1.49    Δ                                        58       blue           1.78    Δ                                        59       blue           1.65    Δ                                        60       blue           1.45    Δ                                        61       blue           1.69    ◯                                  62       blue           1.66    Δ                                        63       blue           1.79    ◯                                  64       blue           1.74    Δ                                        65       blue           1.70    Δ                                        66       blue           1.77    Δ                                        67       blue           1.69    Δ                                        68       blue           1.82    Δ                                        69       blue           1.74    Δ                                        70       blue           1.70    Δ                                        71       blue           1.75    ◯                                  72       blue           1.67    ◯                                  73       blue           1.74    Δ                                        74       blue           1.72    Δ                                        75       blue           1.65    Δ                                        76       blue           1.82    ◯                                  77       blue           1.75    Δ                                        78       blue           1.83    Δ                                        79       blue           1.73    Δ                                        80       blue           1.81    Δ                                        81       blue           1.74    Δ                                        82       blue           1.82    Δ                                        83       blue           1.79    Δ                                        84       blue           1.79    Δ                                        85       --             --      --                                             86       --             --      --                                             87       blue           1.77    Δ                                        88       --             --      --                                             89       --             --      --                                             90       blue           1.69    ◯                                  91       --             --      --                                             92       --             --      --                                             93       blue           1.65    Δ                                        94       --             --      --                                             95       --             --      --                                             96       blue           1.57    Δ                                        97       blue           1.62    Δ                                        98       blue           1.70    Δ                                        99       --             --      --                                             100      --             --      --                                             101      blue           1.73    Δ                                        102      --             --      --                                             103      --             --      --                                             104      blue           1.77    ◯                                  105      blue           1.77    Δ                                        106      --             --      --                                             107      --             --      --                                             108      --             --      --                                             109      --             --      --                                             110      --             --      --                                             111      --             --      --                                             112      --             --      --                                             113      --             --      --                                             114      --             --      --                                             115      --             --      --                                             116      --             --      --                                             117      --             --      --                                             118      --             --      --                                             119      --             --      --                                             120      --             --      --                                             121      blue           1.72    ◯                                  122      blue           1.78    ◯                                  123      blue           1.75    ◯                                  124      blue           1.68    ◯                                  125      blue           1.74    ◯                                  126      blue           1.70    ◯                                  127      blue           1.67    ◯                                  128      blue           1.71    ◯                                  129      blue           1.74    ◯                                  130      blue           1.77    ◯                                  131      blue           1.85    ◯                                  132      blue           1.82    ◯                                  133      blue           1.73    ◯                                  134      blue           1.57    ◯                                  135      blue           1.59    ◯                                  136      blue           1.63    ◯                                  137      blue           4.61    ◯                                  138      blue           1.70    ◯                                  139      blue           1.71    ◯                                  140      blue           1.80    ◯                                  141      blue           1.78    ◯                                  142      blue           1.65    ◯                                  143      blue           1.73    ◯                                  144      blue           1.75    ◯                                  145      blue           1.66    ◯                                  146      blue           1.77    ◯                                  147      blue           1.70    ◯                                  148      blue           1.80    ◯                                  (6-b)                                                                          1        blue           2.02    ◯                                  2        blue           1.95    ◯                                  3        blue           1.98    ◯                                  4        blue           2.12    ◯                                  5        blue           1.83    ◯                                  6        blue           1.97    ◯                                  7        --             --      --                                             8        blue           1.83    Δ                                        9        blue           1.84    Δ                                        10       blue           1.92    Δ                                        11       --             --      --                                             12       blue           2.02    ◯                                  13       blue           2.09    ◯                                  14       blue           1.99    ◯                                  15       --             --      --                                             16       blue           1.79    ◯                                  17       --             --      --                                             18       blue           1.87    ◯                                  19       blue           1.76    ◯                                  20       blue           1.77    Δ                                        21       blue           1.74    Δ                                        22       blue           1.83    Δ                                        23       blue           1.69    Δ                                        24       blue           1.84    ◯                                  25       blue           1.82    ◯                                  26       blue           1.95    ◯                                  27       blue           1.86    ◯                                  28       blue           1.97    ◯                                  29       blue           1.96    Δ                                        30       blue           1.72    Δ                                        31       blue           1.70    Δ                                        32       --             --      --                                             33       blue           1.69    Δ                                        34       blue           1.84    Δ                                        35       blue           1.99    Δ                                        36       blue           1.69    Δ                                        37       blue           1.83    Δ                                        38       blue           1.63    Δ                                        39       blue           1.87    Δ                                        40       blue           1.88    Δ                                        41       blue           1.80    Δ                                        42       blue           1.79    Δ                                        43       --             --      --                                             44       blue           1.65    Δ                                        45       blue           1.89    Δ                                        46       blue           1.91    Δ                                        47       blue           1.65    Δ                                        48       blue           1.71    Δ                                        49       blue           1.79    Δ                                        50       blue           1.77    Δ                                        51       blue           1.81    Δ                                        52       --             --      --                                             53       blue           1.80    Δ                                        54       --             --      --                                             55       blue           1.82    Δ                                        56       --             --      --                                             57       blue           1.78    ◯                                  58       blue           1.70    ◯                                  59       blue           1.65    ◯                                  60       blue           1.69    ◯                                  61       blue           1.80    Δ                                        62       --             --      --                                             63       blue           1.78    Δ                                        64       blue           1.72    Δ                                        65       blue           1.63    Δ                                        66       blue           1.68    Δ                                        67       blue           1.72    ◯                                  68       --             --      --                                             69       --             --      --                                             70       --             --      --                                             71       blue           1.69    Δ                                        72       blue           1.73    ◯                                  73       blue           1.73    Δ                                        74       blue           1.79    Δ                                        75       blue           1.76    Δ                                        76       --             --      --                                             77       --             --      --                                             78       blue           1.83    ◯                                  79       blue           1.81    ◯                                  80       blue           1.84    ◯                                  81       --             --      --                                             82       blue           1.80    ◯                                  83       blue           1.87    ◯                                  84       blue           1.68    ◯                                  85       blue           1.71    ◯                                  86       --             --      --                                             87       blue           1.85    ◯                                  88       blue           1.80    Δ                                        89       blue           1.84    Δ                                        90       blue           1.81    ◯                                  91       blue           1.90    Δ                                        92       blue           1.77    ◯                                  93       blue           1.78    ◯                                  94       blue           1.71    ◯                                  95       --             --      --                                             96       --             --      --                                             97       --             --      --                                             98       blue           1.67    Δ                                        99       --             --      --                                             100      --             --      --                                             101      --             --      --                                             102      blue           1.88    ◯                                  103      blue           1.72    ◯                                  104      blue           1.92    ◯                                  105      blue           1.91    ◯                                  106      blue           1.86    ◯                                  107      blue           1.84    ◯                                  108      --             --      --                                             121      blue           1.77    ◯                                  122      blue           1.80    ◯                                  123      blue           1.79    ◯                                  124      blue           1.75    ◯                                  125      blue           1.65    ◯                                  126      blue           1.61    ◯                                  127      blue           1.68    ◯                                  128      blue           1.60    ◯                                  129      blue           1.57    ◯                                  130      blue           1.63    ◯                                  131      blue           1.74    ◯                                  132      blue           1.79    ◯                                  133      blue           1.77    ◯                                  134      blue           1.82    ◯                                  135      blue           1.81    ◯                                  136      blue           1.64    ◯                                  137      blue           1.62    ◯                                  138      blue           1.74    ◯                                  139      blue           1.75    ◯                                  140      blue           1.75    ◯                                  141      blue           1.80    ◯                                  142      blue           1.79    ◯                                  143      blue           1.65    ◯                                  144      blue           1.72    ◯                                  145      blue           1.65    ◯                                  146      blue           1.66    ◯                                  147      blue           1.71    ◯                                  148      blue           1.75    ◯                                  (6-c)                                                                          1        blue           1.90    Δ                                        2        blue           1.72    ◯                                  3        blue           1.82    Δ                                        4        blue           1.82    ◯                                  5        blue           1.77    ◯                                  6        --             --      --                                             7        blue           1.84    ◯                                  8        blue           1.94    Δ                                        9        --             --      --                                             10       blue           1.98    ◯                                  11       blue           1.96    Δ                                        12       blue           1.80    ◯                                  13       blue           1.77    Δ                                        14       blue           1.82    ◯                                  15       --             --      --                                             16       --             --      --                                             17       --             --      --                                             18       blue           2.04    Δ                                        19       blue           2.11    ◯                                  20       blue           1.73    ◯                                  21       blue           1.73    Δ                                        22       blue           1.70    ◯                                  23       blue           1.72    Δ                                        24       blue           1.76    Δ                                        25       blue           2.11    Δ                                        26       --             --      --                                             27       blue           1.87    Δ                                        28       blue           2.18    Δ                                        29       --             --      --                                             30       --             --      --                                             31       --             --      --                                             32       blue           1.64    ◯                                  33       blue           1.99    Δ                                        34       blue           1.70    Δ                                        35       blue           1.60    Δ                                        36       --             --      --                                             37       blue           1.75    Δ                                        38       blue           1.83    Δ                                        39       blue           1.91    Δ                                        40       --             --      --                                             41       blue           1.92    Δ                                        42       blue           1.78    Δ                                        43       --             --      --                                             44       --             --      --                                             45       blue           1.88    Δ                                        46       blue           1.79    Δ                                        47       blue           2.02    Δ                                        48       blue           1.73    Δ                                        49       blue           1.95    ◯                                  50       --             --      --                                             51       --             --      --                                             52       --             --      --                                             53       --             --      --                                             54       blue           1.86    ◯                                  55       blue           1.68    Δ                                        56       blue           1.78    Δ                                        57       --             --      --                                             58       --             --      --                                             59       blue           2.14    Δ                                        60       blue           2.17    Δ                                        61       blue           1.82    Δ                                        62       blue           1.95    ◯                                  63       blue           1.69    Δ                                        64       --             --      --                                             65       blue           1.75    Δ                                        66       blue           1.72    Δ                                        67       blue           1.78    ◯                                  68       --             --      --                                             69       blue           1.81    Δ                                        70       --             --      --                                             71       blue           1.77    Δ                                        72       blue           1.97    ◯                                  73       blue           1.68    ◯                                  74       blue           1.79    ◯                                  75       --             --      --                                             76       --             --      --                                             77       blue           2.08    Δ                                        78       blue           1.77    ◯                                  79       --             --      --                                             80       --             --      --                                             81       blue           1.92    ◯                                  82       blue           2.06    Δ                                        83       blue           1.77    Δ                                        84       blue           1.84    Δ                                        85       blue           1.72    ◯                                  86       blue           1.77    ◯                                  87       blue           1.86    ◯                                  88       blue           1.63    ◯                                  89       --             --      --                                             90       --             --      --                                             91       blue           1.66    Δ                                        92       blue           1.92    Δ                                        93       blue           1.87    Δ                                        94       --             --      --                                             95       blue           1.95    Δ                                        96       blue           2.12    Δ                                        97       blue           2.00    Δ                                        98       --             --      --                                             99       blue           1.77    Δ                                        100      blue           2.01    Δ                                        101      --             --      --                                             102      blue           1.95    Δ                                        103      blue           1.87    ◯                                  104      --             --      --                                             105      blue           1.86    ◯                                  106      blue           1.84    ◯                                  107      --             --      --                                             108      --             --      --                                             109      blue           1.81    Δ                                        110      --             --      --                                             111      blue           1.84    Δ                                        112      --             --      --                                             113      --             --      --                                             114      --             --      --                                             115      --             --      --                                             116      blue           1.77    ◯                                  117      blue           1.98    Δ                                        118      blue           1.71    Δ                                        119      blue           1.92    Δ                                        120      blue           1.94    Δ                                        121      blue           1.65    ◯                                  122      blue           1.68    ◯                                  123      blue           1.71    ◯                                  124      blue           1.72    ◯                                  125      blue           1.66    ◯                                  126      blue           1.69    ◯                                  127      blue           1.70    ◯                                  128      blue           1.73    ◯                                  129      blue           1.77    ◯                                  130      blue           1.82    ◯                                  131      blue           1.86    ◯                                  132      blue           1.58    ◯                                  133      blue           1.72    ◯                                  134      blue           1.73    ◯                                  135      blue           1.79    ◯                                  136      blue           1.71    ◯                                  137      blue           1.61    ◯                                  138      blue           1.70    ◯                                  139      blue           1.74    ◯                                  140      blue           1.68    ◯                                  141      blue           1.77    ◯                                  142      blue           1.69    ◯                                  143      blue           1.80    ◯                                  144      blue           1.71    ◯                                  145      blue           1.81    ◯                                  146      blue           1.83    ◯                                  147      blue           1.78    ◯                                  148      blue           1.77    ◯                                  __________________________________________________________________________

(7) Dyes having the following structure: ##STR20## wherein K stands for --N═N--, R₄ stands for a hydrogen atoms, a halogen atoms, a substituted or unsubstituted alkyl group, cycloalkyl group, allyl group, aryl group, aralkyl group or aromatic heterocyclic group, R₅ stands for a cyano group, a nitro group or a substituted or unsubstituted formylamino group, sulfonylamino group, alkoxycarbonyl group, carbamoyl group, sulfamoyl group or ureido group.

Specific examples of the dyes represented by the general formula 7 and the performance thereof in the case of use in a thermal transfer sheet which will be described later are given in the following Table 7.

                                      TABLE 7                                      __________________________________________________________________________     (7-1)                                                                           ##STR21##                                                                      ##STR22##                                                                      ##STR23##                                                                     No.                                                                               R.sub.1     R.sub.2   2-R.sub.3                                                                               4-R.sub.3                                    __________________________________________________________________________     7-1 common to a to c                                                           1  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            2  CH.sub.2 CHCH.sub.2                                                                        C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            3  C.sub.2 H.sub.4 CN                                                                         C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            4  C.sub.2 H.sub.4 OH                                                                         C.sub.2 H.sub.5                                                                          NHSO.sub.2 CH.sub.3                                                                     H                                            5  C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                          NHCOC.sub.2 H.sub.5                                                                     H                                            6  C.sub.2 H.sub.4 COOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            7  C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            8  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                               C.sub.2 H.sub.5                                                                          H        H                                            9  CH.sub.2 OCOOPh                                                                            C.sub.2 H.sub.5                                                                          OCH.sub.3                                                                               H                                            10 C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                          NHCOC.sub.2 H.sub.5                                                                     H                                            11 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          OH       H                                            12 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            13 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            14 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            15 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            16 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                         H                                            17 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            18 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3                                              19 C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.4 OCH.sub.3                                                                NHCOCH.sub.3                                                                            H                                            20 CH.sub.2 Ph CH.sub.3  OC.sub.2 H.sub.5                                                                        H                                            21 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3                                              22 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHSO.sub.2 CH.sub.3                                                                     CH.sub.3                                     23 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            5-NHCOCH.sub.3                               24 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.4 OCOCH.sub.3                                                              CH.sub.3 H                                            25 C.sub.2 H.sub.5                                                                            H         CH.sub.3 H                                            26 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            27 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            28 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            29 CH.sub.2 CHCH.sub.2                                                                        C.sub.2 H.sub.4 OCH.sub.3                                                                CH.sub.3 H                                            30 C.sub.2 H.sub.4 -cyclohexyl                                                                C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            31 combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          CH.sub.3 H                                               with X to form                                                                 C.sub.3 H.sub.6                                                             32 combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                               with X to form                                                                 C.sub.3 H.sub.6                                                             33 combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          NHSO.sub.2 CH.sub.3                                                                     H                                               with X to form                                                                 C.sub.3 H.sub.6                                                             34 combining of R.sub.1 with R.sub.2 to form C.sub.5 H.sub.10                                           CH.sub.3 H                                            35 combining of R.sub.1 with R.sub.2 to form C.sub.5 H.sub.10                                           NHCOCH.sub.3                                                                            H                                            36 combining of R.sub.1 with R.sub.2 to form C.sub.5 H.sub.10                                           NHSO.sub.2 CH.sub.3                                                                     H                                            37 combining of R.sub.1 with R.sub.2 to form C.sub.5 H.sub.10                                           H        H                                            38 combining of R.sub.1 with R.sub.2 to form C.sub.2 H.sub.4 OC.sub.2             H.sub.4               H        H                                            39 combining of R.sub.1 with R.sub.2 to form C.sub.2 H.sub.4 OC.sub.2             H.sub.4               CH.sub.3 H                                            40 combining of R.sub.1 with R.sub.2 to form C.sub.2 H.sub.4 OC.sub.2             H.sub.4               NHCOCH.sub.3                                                                            H                                            41 combining of R.sub.1 with R.sub.2 to form C.sub.2 H.sub.4 OC.sub.2             H.sub.4               NHSO.sub.2 CH.sub.3                                                                     H                                            42 combining of R.sub.1 with R.sub.2 to form C.sub.4 H.sub.8                                            NHCOCH.sub.3                                                                            H                                            43 C.sub.2 H.sub.4 OCOOC.sub.2 H.sub.5                                                        CH.sub.3  CH.sub.3 H                                            44 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            45 C.sub.2 H.sub.4 OC.sub.2 H.sub.4 OC.sub.2 H.sub.5                                          C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            46 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            47 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            48 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            5-OCH.sub.3                                  49 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 5-CH.sub.3                                   7-1 b,c                                                                        50 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            51 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            52 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            53 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            54 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            55 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            56 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            __________________________________________________________________________     No.                                                                               R.sub.4    R.sub.5                                                                               hue     coloring density                                                                       light fastness                            __________________________________________________________________________     (7-1-a K: NN)                                                                  1  CH.sub.2 Ph                                                                               CN     orange  2.14    ◯                             2  CH.sub.2 Ph                                                                               CN     orange  2.02    Δ                                   3  CH.sub.2 Ph                                                                               CN     orange  2.20    Δ                                   4  CH.sub.2 Ph                                                                               CN     orange  1.98    Δ                                   5  CH.sub.2 Ph                                                                               CN     orange  1.97    ◯                             6  CH.sub.2 Ph                                                                               CN     orange  1.88    ◯                             7  CH.sub.2 Ph                                                                               CN     orange  1.94    ◯                             8  CH.sub.2 Ph                                                                               CN     orange  1.87    Δ                                   9  CH.sub.2 Ph                                                                               CN     orange  1.79    ◯                             10 CH.sub.2 Ph                                                                               CN     orange  1.94    ◯                             11 CH.sub.2 Ph                                                                               CN     orange  1.70    ◯                             12 CH.sub.2 Ph                                                                               NO.sub.2                                                                              orange  1.93    Δ                                   13 CH.sub.2 Ph                                                                               COOH   yellowish orange                                                                       1.80    Δ                                   14 CH.sub.2 Ph                                                                               COOC.sub.2 H.sub.5                                                                    yellowish orange                                                                       1.75    Δ                                   15 CH.sub.2 Ph                                                                               CN     orange  1.96    ◯                             16 CH.sub.2 Ph                                                                               SO.sub.2 NHCH.sub.3                                                                   yellowish orange                                                                       2.01    ◯                             17 CH.sub.2 Ph                                                                               CONHCH.sub.3                                                                          yellowish orange                                                                       1.94    ◯                             18 CH.sub.2 Ph                                                                               CN     orange  1.83    ◯                             19 CH.sub.2 Ph                                                                               CN     orange  1.92    ◯                             20 CH.sub.2 Ph                                                                               CN     orange  1.88    ◯                             21 CH.sub.2 CHCH.sub.2                                                                       CN     orange  1.96    Δ                                   22 nC.sub.4 H.sub.9                                                                          CN     orange  1.87    Δ                                   23 nC.sub.4 H.sub.9                                                                          CN     orange  1.73    ◯                             24 nC.sub.4 H.sub.9                                                                          CN     orange  2.00    ◯                             25 nC.sub.4 H.sub.9                                                                          CN     orange  1.83    Δ                                   26 Ph         CN     orange  1.72    ◯                             27 2-thienyl  CN     orange  1.77    ◯                             28 isoC.sub.3 H.sub.7                                                                        CN     orange  1.79    Δ                                   29 nC.sub.4 H.sub.9                                                                          CN     orange  1.77    ◯                             30 nC.sub.4 H.sub.9                                                                          CN     orange  1.71    Δ                                   31 nC.sub.4 H.sub.9                                                                          CN     orange  1.79    ◯                             32 nC.sub.4 H.sub.9                                                                          CN     orange  1.81    ◯                             33 nC.sub.4 H.sub.9                                                                          CN     orange  1.82    ◯                             34 nC.sub.4 H.sub.9                                                                          CN     orange  1.65    ◯                             35 nC.sub.4 H.sub.9                                                                          CN     orange  1.90    ◯                             36 nC.sub.4 H.sub.9                                                                          CN     orange  1.76    ◯                             37 nC.sub.4 H.sub.9                                                                          CN     orange  1.86    ◯                             38 nC.sub.4 H.sub.9                                                                          CN     orange  1.91    ◯                             39 nC.sub.4 H.sub.9                                                                          CN     orange  1.80    ◯                             40 nC.sub.4 H.sub.9                                                                          CN     orange  1.79    ◯                             41 nC.sub.4 H.sub.9                                                                          CN     orange  1.79    ◯                             42 nC.sub.4 H.sub.9                                                                          CN     orange  1.94    ◯                             43 tert-C.sub.4 H.sub.9                                                                      CN     orange  1.75    ◯                             44 C.sub.6 H.sub.13                                                                          CN     orange  1.84    ◯                             45 nC.sub.4 H.sub.9                                                                          CN     orange  1.89    ◯                             46 2-thiazolyl                                                                               CN     orange  1.87    Δ                                   47 3-thienyl  CN     orange  1.70    Δ                                   48 nC.sub.4 H.sub.9                                                                          CN     orange  1.75    Δ                                   49 nC.sub.4 H.sub.9                                                                          CN     orange  1.69    Δ                                   (7-1-b K: NN)                                                                  1  CH.sub.2 Ph                                                                               CN     orange  2.12    ◯                             2  CH.sub.2 Ph                                                                               CN     orange  2.03    --                                        3  CH.sub.2 Ph                                                                               CN     orange  2.10    ◯                             4  CH.sub.2 Ph                                                                               CN     orange  1.90    ◯                             5  CH.sub.2 Ph                                                                               CN     orange  1.99    ◯                             6  CH.sub.2 Ph                                                                               CN     orange  1.90    ◯                             7  CH.sub.2 Ph                                                                               CN     orange  1.96    ◯                             8  CH.sub.2 Ph                                                                               CN     orange  1.80    ◯                             9  CH.sub.2 Ph                                                                               CN     orange  1.83    ◯                             10 CH.sub.2 Ph                                                                               CN     orange  1.90    ◯                             11 CH.sub.2 Ph                                                                               CN     orange  1.73    ◯                             12 CH.sub.2 Ph                                                                               NO.sub.2                                                                              orange  1.90    Δ                                   13 CH.sub.2 Ph                                                                               COOH   yellowish orange                                                                       1.75    ◯                             14 CH.sub.2 Ph                                                                               COOC.sub.2 H.sub.5                                                                    yellowish orange                                                                       1.78    Δ                                   15 CH.sub.2 Ph                                                                               CN     orange  1.90    ◯                             16 CH.sub.2 Ph                                                                               SO.sub.2 NHCH.sub.3                                                                   yellowish orange                                                                       1.96    ◯                             17 CH.sub.2 Ph                                                                               CONHCH.sub.3                                                                          yellowish orange                                                                       1.90    ◯                             18 CH.sub.2 Ph                                                                               CN     orange  1.81    ◯                             19 CH.sub.2 Ph                                                                               CN     orange  1.75    ◯                             20 CH.sub.2 Ph                                                                               CN     orange  1.83    Δ                                   21 CH.sub.2 CHCH.sub.2                                                                       CN     orange  1.91    ◯                             22 nC.sub.4 H.sub.9                                                                          CN     orange  1.83    ◯                             23 nC.sub.4 H.sub.9                                                                          CN     orange  1.76    ◯                             24 nC.sub.4 H.sub.9                                                                          CN     orange  1.95    ◯                             25 nC.sub.4 H.sub.9                                                                          CN     orange  1.80    ◯                             26 Ph         CN     orange  1.71    Δ                                   27 2-thienyl  CN     orange  1.79    ◯                             28 isoC.sub.3 H.sub.7                                                                        CN     orange  1.82    Δ                                   29 nC.sub.4 H.sub.9                                                                          CN     orange  1.72    ◯                             30 nC.sub.4 H.sub.9                                                                          CN     orange  1.65    ◯                             31 nC.sub.4 H.sub.9                                                                          CN     orange  1.70    ◯                             32 nC.sub.4 H.sub.9                                                                          CN     orange  I.76    ◯                             33 nC.sub.4 H.sub.9                                                                          CN     orange  1.74    ◯                             34 nC.sub.4 H.sub.9                                                                          CN     orange  1.66    ◯                             35 nC.sub.4 H.sub.9                                                                          CN     orange  1.91    ◯                             36 nC.sub.4 H.sub.9                                                                          CN     orange  1.76    ◯                             37 nC.sub.4 H.sub.9                                                                          CN     orange  1.86    Δ                                   38 nC.sub.4 H.sub.9                                                                          CN     orange  1.96    Δ                                   39 nC.sub.4 H.sub.9                                                                          CN     orange  1.85    Δ                                   40 nC.sub.4 H.sub.9                                                                          CN     orange  1.72    ◯                             41 nC.sub.4 H.sub.9                                                                          CN     orange  1.73    ◯                             42 nC.sub.4 H.sub.9                                                                          CN     orange  1.90    ◯                             43 tert-C.sub.4 H.sub.9                                                                      CN     orange  1.78    ◯                             44 C.sub.6 H.sub.13                                                                          CN     orange  1.80    ◯                             45 nC.sub.4 H.sub.9                                                                          CN     orange  1.81    ◯                             46 2-thiazolyl                                                                               CN     orange  1.83    Δ                                   47 3-thienyl  CN     orange  1.71    ◯                             48 nC.sub.4 H.sub.9                                                                          CN     orange  1.79    Δ                                   49 nC.sub.4 H.sub.9                                                                          CN     orange  1.71    Δ                                   (7-1-c K: NN)                                                                  1  CH.sub.2 Ph                                                                               CN     red     2.10    ◯                             2  CH.sub.2 Ph                                                                               CN     red     1.97    ◯                             3  CH.sub.2 Ph                                                                               CN     red     2.00    ◯                             4  CH.sub.2 Ph                                                                               CN     red     1.73    Δ                                   5  CH.sub.2 Ph                                                                               CN     red     1.90    ◯                             6  CH.sub.2 Ph                                                                               CN     red     1.81    ◯                             7  CH.sub.2 Ph                                                                               CN     red     1.85    ◯                             8  CH.sub.2 Ph                                                                               CN     red     1.69    Δ                                   9  CH.sub.2 Ph                                                                               CN     red     1.70    ◯                             10 CH.sub.2 Ph                                                                               CN     red     1.90    ◯                             11 CH.sub.2 Ph                                                                               CN     red     1.74    Δ                                   12 CH.sub.2 Ph                                                                               NO.sub.2                                                                              red     1.68    ◯                             13 --         --     --      --      --                                        14 --         --     --      --      --                                        15 CH.sub.2 Ph                                                                               CN     red     1.96    ◯                             16 --         --     --      --      --                                        17 CH.sub.2 Ph                                                                               CONHCH.sub.3                                                                          red     1.81    ◯                             18 CH.sub.2 Ph                                                                               CN     red     1.76    ◯                             19 CH.sub.2 Ph                                                                               CN     red     1.85    ◯                             20 CH.sub.2 Ph                                                                               CN     red     1.80    Δ                                   21 CH.sub.2 CHCH.sub.2                                                                       CN     red     1.90    ◯                             22 nC.sub.4 H.sub.9                                                                          CN     red     1.82    Δ                                   23 nC.sub.4 H.sub.9                                                                          CN     red     1.70    ◯                             24 nC.sub.4 H.sub.9                                                                          CN     red     1.86    ◯                             25 nC.sub.4 H.sub.9                                                                          CN     red     1.80    ◯                             26 Ph         CN     red     1.78    ◯                             27 2-thienyl  CN     red     1.77    ◯                             28 --         --     --      --      --                                        29 nC.sub.4 H.sub.9                                                                          CN     red     1.71    ◯                             30 nC.sub.4 H.sub.9                                                                          CN     red     1.74    ◯                             31 nC.sub.4 H.sub.9                                                                          CN     red     1.75    Δ                                   32 nC.sub.4 H.sub.9                                                                          CN     red     1.78    ◯                             33 nC.sub.4 H.sub.9                                                                          CN     red     1.84    Δ                                   34 nC.sub.4 H.sub.9                                                                          CN     red     1.62    ◯                             35 --         --     --      --      --                                        36 --         --     --      --      --                                        37 nC.sub.4 H.sub.9                                                                          CN     red     1.80    ◯                             38 nC.sub.4 H.sub.9                                                                          CN     red     1.70    Δ                                   39 nC.sub.4 H.sub.9                                                                          CN     red     1.74    ◯                             40 nC.sub.4 H.sub.9                                                                          CN     red     1.76    ◯                             41 --         --     --      --      --                                        42 nC.sub.4 H.sub.9                                                                          CN     red     1.84    ◯                             43 nC.sub.4 H.sub.9                                                                          CN     red     1.73    Δ                                   44 C.sub.6 H.sub.13                                                                          CN     red     1.86    ◯                             45 nC.sub.4 H.sub.9                                                                          CN     red     1.80    Δ                                   46 2-thiazolyl                                                                               CN     red     1.80    ◯                             47 3-thienyl  CN     red     1.71    ◯                             48 nC.sub.4 H.sub.9                                                                          CN     red     1.73    ◯                             49 nC.sub.4 H.sub.9                                                                          CN     red     1.75    ◯                             50 --         --     --      --      --                                        51 2-benzothiazolyl                                                                          CN     red     1.74    ◯                             52 2-pyridyl  CN     red     1.68    Δ                                   53 --         --     --      --      --                                        54 --         --     --      --      --                                        55 2-(4,5-dicyano)thiazolyl                                                                  CN     red     1.73    Δ                                   56 Ph         CN     red     1.76    ◯                             __________________________________________________________________________     (7-2)                                                                           ##STR24##                                                                      ##STR25##                                                                      ##STR26##                                                                     No.                                                                               R.sub.1     R.sub.2   3-R.sub.3                                                                               X or Y                                       __________________________________________________________________________     7-2 common to a to c                                                           1  C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            2  CH.sub.2 CHCH.sub.2                                                                        C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            3  C.sub.2 H.sub.4 CN                                                                         C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            4  C.sub.2 H.sub.4 OH                                                                         C.sub.2 H.sub.5                                                                          NHSO.sub.2 CH.sub.3                                                                     H                                            5  C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                          NHCOC.sub.2 H.sub.5                                                                     H                                            6  C.sub.2 H.sub.4 COOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            7  C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            8  CH.sub.2 OCH.sub.2 Ph                                                                      C.sub.2 H.sub.5                                                                          H        H                                            9  CH.sub.2 OCOOPh                                                                            C.sub.2 H.sub.5                                                                          OCH.sub.3                                                                               H                                            10 C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                          NHCOC.sub.2 H.sub.5                                                                     H                                            11 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          CH       H                                            12 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            13 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            14 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            15 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            16 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                         H                                            17 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            18 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 X,Y = OH                                     19 C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.4 OCH.sub.3                                                                NHCOCH.sub.3                                                                            H                                            20 CH.sub.2 Ph CH.sub.3  OC.sub.2 H.sub.5                                                                        H                                            21 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            22 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHSO.sub.2 CH.sub.3                                                                     CH.sub.3                                     23 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            Y = OH                                       24 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            Y = NHCOCH.sub.3                             25 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.4 OCOCH.sub.3                                                              CH.sub.3 H                                            26 C.sub.2 H.sub.5                                                                            H         CH.sub.3 H                                            27 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            28 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          H        H                                            29 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            30 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            31 CH.sub.2 CHCH.sub.2                                                                        C.sub.2 H.sub.4 OCH.sub.3                                                                CH.sub.3 H                                            32 C.sub.2 H.sub.4 O-cyclohexyl                                                               C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            33 combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          CH.sub.3 H                                               with X to form                                                                 C.sub.3 H.sub.6                                                             34 combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                               with X to form                                                                 C.sub.3 H.sub.6                                                             35 combining of R.sub.1                                                                       C.sub.2 H.sub.5                                                                          NHSO.sub.2 CH.sub.3                                                                     H                                               with X to form                                                                 C.sub.3 H.sub.6                                                             36 combining of R.sub.1 with R.sub.2 to form C.sub.5 H.sub.10                                           CH.sub.3 H                                            37 combining of R.sub.1 with R.sub.2 to form C.sub.5 H.sub.10                                           NHCOCH.sub.3                                                                            H                                            38 combining of R.sub.1 with R.sub.2 to form C.sub.5 H.sub.10                                           CH.sub.3 H                                            39 combining of R.sub.1 with R.sub.2 to form C.sub.2 H.sub.4 OC.sub.2             H.sub.4               NHCOCH.sub.3                                                                            H                                            40 combining of R.sub.1 with R.sub.2 to form C.sub.2 H.sub.4 OC.sub.2             H.sub.4               CH.sub.3 X = CN                                       41 combining of R.sub.1 with R.sub.2 to form C.sub.4 H.sub.8                                            NHCOCH.sub.3                                                                            H                                            42 C.sub.2 H.sub.4 OCOOC.sub.2 H.sub.5                                                        CH.sub.3  CH.sub.3 H                                            43 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            44 C.sub.2 H.sub.4 OC.sub.2 H.sub.4 OC.sub.2 H.sub.5                                          C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            45 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            46 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            X = OC.sub.2 H.sub.5                         47 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 X = CH.sub.3                                 48 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 X,Y = CH.sub.3                               49 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            Y = CN                                       50 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 X,Y = CN                                     51 combining of R.sub.1                                                                       combining of R.sub.2                                                                     CH.sub.3                                                 with X to form                                                                             with Y to form                                                     C.sub.3 H.sub.6                                                                            C.sub.3 H.sub.6                                                 52 combining of R.sub.1                                                                       combining of R.sub.2                                                                     NHCOCH.sub.3                                             with X to form                                                                             with Y to form                                                     C.sub.3 H.sub.6                                                                            C.sub.3 H.sub.6                                                 53 combining of R.sub.1                                                                       combining of R.sub.2                                                                     NHSO.sub.2 CH.sub.3                                      with X to form                                                                             with Y to form                                                     C.sub.3 H.sub.6                                                                            C.sub.3 H.sub.6                                                 7-2 b to c                                                                     54 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            55 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            56 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            57 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 H                                            58 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          CH.sub.3 Y = CN                                       59 C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            60 C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                          NHCOCH.sub.3                                                                            H                                            __________________________________________________________________________     No.                                                                               R.sub.4    R.sub.5                                                                               hue     coloring density                                                                       light fastness                            __________________________________________________________________________     (7-2-a K: NN)                                                                  1  CH.sub.2 Ph                                                                               CN     red     1.90    ◯                             2  CH.sub.2 Ph                                                                               CN     red     1.88    ◯                             3  CH.sub.2 Ph                                                                               CN     red     2.02    ◯                             4  CH.sub.2 Ph                                                                               CN     red     1.96    ◯                             5  CH.sub.2 Ph                                                                               CN     red     2.11    ◯                             6  CH.sub.2 Ph                                                                               CN     red     1.91    ◯                             7  CH.sub.2 Ph                                                                               CN     red     1.88.   ◯                             8  CH.sub.2 Ph                                                                               CN     red     1.82    ◯                             9  CH.sub.2 Ph                                                                               CN     red     1.77    Δ                                   10 CH.sub.2 Ph                                                                               CN     red     1.74    ◯                             11 CH.sub.2 Ph                                                                               CN     red     1.97    Δ                                   12 CH.sub.2 Ph                                                                               NO.sub.2                                                                              red     1.72    Δ                                   13 CH.sub.2 Ph                                                                               COOH   red     1.80    ◯                             14 CH.sub.2 Ph                                                                               COOC.sub.2 H.sub.5                                                                    red     1.77    Δ                                   15 CH.sub.2 Ph                                                                               CN     red     1.88    ◯                             16 CH.sub.2 Ph                                                                               SO.sub.2 NHCH.sub.3                                                                   red     1.81    Δ                                   17 CH.sub.2 Ph                                                                               CONHCH.sub.3                                                                          red     1.89    ◯                             18 CH.sub.2 Ph                                                                               CN     red     1.84    ◯                             19 CH.sub.2 Ph                                                                               CN     red     1.87    ◯                             20 CH.sub.2 Ph                                                                               CN     red     1.76    Δ                                   21 CHCH.sub.2 CN     red     1.82    Δ                                   22 CH.sub.2 Ph                                                                               CN     red     1.87    ◯                             23 CH.sub.2 Ph                                                                               CN     red     1.91    ◯                             24 nC.sub.4 H.sub.9                                                                          CN     red     1.87    ◯                             25 nC.sub.4 H.sub.9                                                                          CN     red     1.80    ◯                             26 nC.sub.4 H.sub.9                                                                          CN     red     1.76    ◯                             27 Ph         CN     red     1.70    ◯                             28 2-thienyl  CN     red     1.73    ◯                             29 3-thienyl  CN     red     1.64    ◯                             30 isoC.sub.3 H.sub.7                                                                        CN     red     1.71    ◯                             31 nC.sub.4 H.sub.9                                                                          CN     red     1.89    Δ                                   32 nC.sub.4 H.sub.9                                                                          CN     red     1.80    Δ                                   33 nC.sub.4 H.sub.9                                                                          CN     red     1.92    ◯                             34 nC.sub.4 H.sub.9                                                                          CN     red     1.87    ◯                             35 nC.sub.4 H.sub.9                                                                          CN     red     1.80    Δ                                   36 nC.sub.4 H.sub.9                                                                          CN     red     1.94    Δ                                   37 nC.sub.4 H.sub.9                                                                          CN     red     1.70    ◯                             38 nC.sub.4 H.sub.9                                                                          CN     red     1.76    ◯                             39 nC.sub.4 H.sub.9                                                                          CN     red     1.97    ◯                             40 nC.sub.4 H.sub.9                                                                          CN     red     1.77    ◯                             41 nC.sub.4 H.sub.9                                                                          CN     red     1.82    ◯                             42 tert-C.sub.4 H.sub.9                                                                      CN     red     2.06    ◯                             43 C.sub.6 H.sub.13                                                                          CN     red     1.84    ◯                             44 nC.sub.4 H.sub.9                                                                          CN     red     1.76    Δ                                   45 2-thiazolyl                                                                               CN     red     1.81    Δ                                   46 nC.sub.4 H.sub.9                                                                          CN     red     1.73    Δ                                   47 nC.sub.4 H.sub.9                                                                          CN     red     1.82    ◯                             48 nC.sub.4 H.sub.9                                                                          CN     red     1.77    ◯                             49 nC.sub.4 H.sub.9                                                                          CN     red     1.80    ◯                             50 nC.sub.4 H.sub.9                                                                          CN     red     1.90    ◯                             51 nC.sub.4 H.sub.9                                                                          CN     red     1.83    Δ                                   52 nC.sub.4 H.sub.9                                                                          CN     red     1.87    Δ                                   53 nC.sub.4 H.sub.9                                                                          CN     red     1.89    Δ                                   (7-2-b K: NN)                                                                  1  CH.sub.2 Ph                                                                               CN     red     1.89    Δ                                   2  CH.sub.2 Ph                                                                               CN     red     1.82    Δ                                   3  --         --     --      --      --                                        4  CH.sub.2 Ph                                                                               CN     red     1.76    Δ                                   5  --         --     --      --      --                                        6  --         --     --      --      --                                        7  CH.sub.2 Ph                                                                               CN     red     1.70    ◯                             8  CH.sub.2 Ph                                                                               CN     red     1.72    ◯                             9  CH.sub.2 Ph                                                                               CN     red     1.68    Δ                                   iO CH.sub.2 Ph                                                                               CN     red     1.76    ◯                             ii CH.sub.2 Ph                                                                               CN     red     1.80    Δ                                   12 CH.sub.2 Ph                                                                               NO.sub.2                                                                              red     1.71    Δ                                   13 CH.sub.2 Ph                                                                               COOH   red     1.79    Δ                                   14 --         --     --      --      --                                        15 CH.sub.2 Ph                                                                               CN     red     1.80    ◯                             16 --         --     --      --      --                                        17 CH.sub.2 Ph                                                                               CONHCH.sub.3                                                                          red     1.74                                              18 CH.sub.2 Ph                                                                               CN     red     1.58    Δ                                   19 CH.sub.2 Ph                                                                               CN     red     1.78    ◯                             20 CH.sub.2 Ph                                                                               CN     red     1.79    ◯                             21 --         --     --      --      --                                        22 CH.sub.2 Ph                                                                               CN     red     1.81    ◯                             23 CH.sub.2 Ph                                                                               CN     red     1.70    Δ                                   24 nC.sub.4 H.sub.9                                                                          CN     red     1.77    ◯                             25 nC.sub.4 H.sub.9                                                                          CN     red     1.89    ◯                             26 --         --     --      --      --                                        27 Ph         CN     red     1.85    ◯                             28 2-thienyl  CN     red     1.69    ◯                             29 3-thienyl  CN     red     1.72    Δ                                   30 --         --     --      --      --                                        31 --         --     --      --      --                                        32 nC.sub.4 H.sub.9                                                                          CN     red     1.64    Δ                                   33 nC.sub.4 H.sub.9                                                                          CN     red     1.70    ◯                             34 nC.sub.4 H.sub.9                                                                          CN     red     1.73    ◯                             35 nC.sub.4 H.sub.9                                                                          CN     red     1.82    Δ                                   36 nC.sub.4 H.sub.9                                                                          CN     red     1.69    ◯                             37 nC.sub.4 H.sub.9                                                                          CN     red     1.71    ◯                             38 --         --     --      --      --                                        39 --         --     --      --      --                                        41 nC.sub.4 H.sub.9                                                                          CN     red     1.78    ◯                             42 --         --     --      --      --                                        43 C.sub.6 H.sub.13                                                                          CN     red     1.80    ◯                             44 nC.sub.4 H.sub.9                                                                          CN     red     1.82    ◯                             45 2-thiazolyl                                                                               CN     red     1.77    Δ                                   46 nC.sub.4 H.sub.9                                                                          CN     red     1.68    Δ                                   47 nC.sub.4 H.sub.9                                                                          CN     red     1.76    ◯                             48 nC.sub.4 H.sub.9                                                                          CN     red     1.71    ◯                             49 nC.sub.4 H.sub.9                                                                          CN     red     1.74    ◯                             50 nC.sub.4 H.sub.9                                                                          CN     red     1.80    ◯                             51 nC.sub.4 H.sub.9                                                                          CN     red     1.81    Δ                                   52 nC.sub.4 H.sub.9                                                                          CN     red     1.82    ◯                             53 nC.sub.4 H.sub.9                                                                          CN     red     1.83    ◯                             54 1-naphthyl CN     red     1.70    ◯                             55 --         --     --      --      --                                        56 2-pyridyl  CN     red     1.65    ◯                             57 2-furyl    CN     red     1.69    ◯                             58 --         --     --      --      --                                        59 2-(4,5-dicyano)thiazolyl                                                                  CN     red     1.73    ◯                             60 Ph         CN     red     1.79    ◯                             (7-2-c K: NN)                                                                  1  CH.sub.2 Ph                                                                               CN     red     1.76    Δ                                   2  CH.sub.2 Ph                                                                               CN     red     1.87    ◯                             3  --         --     --      --      --                                        5  --         --     --      --      --                                        6  CH.sub.2 Ph                                                                               CN     red     1.79    ◯                             7  CH.sub.2 Ph                                                                               CN     red     1.82    ◯                             8  CH.sub.2 Ph                                                                               CN     red     1.73    ◯                             9  --         --     --      --      --                                        10 CH.sub.2 Ph                                                                               CN     red     2.06    ◯                             11 CH.sub.2 Ph                                                                               CN     red     1.69    Δ                                   12 CH.sub.2 Ph                                                                               NO.sub.2                                                                              red     1.73    Δ                                   13 CH.sub.2 Ph                                                                               COOH   red     1.68    Δ                                   14 --         --     --      --      --                                        15 CH.sub.2 Ph                                                                               CN     red     1.77    ◯                             16 --         --     --      --      --                                        17 CH.sub.2 Ph                                                                               CONHCH.sub.3                                                                          red     1.78    ◯                             18 CH.sub.2 Ph                                                                               CN     red     1.70    Δ                                   19 CH.sub.2 Ph                                                                               CN     red     1.89    ◯                             20 CH.sub.2 Ph                                                                               CN     red     1.65    Δ                                   21 --         --     --      --      --                                        22 C.sub.4 H.sub.9                                                                           CN     red     1.80    Δ                                   23 C.sub.4 H.sub.9                                                                           CN     red     1.91    Δ                                   24 nC.sub.4 H.sub.9                                                                          CN     red     1.92    ◯                             25 nC.sub.4 H.sub.9                                                                          CN     red     1.82    ◯                             26 nC.sub.4 H.sub.9                                                                          CN     red     1.84    ◯                             27 --         --     --      --      --                                        28 2-thienyl  CN     red     1.78    Δ                                   29 3-thienyl  CN     red     1.73    Δ                                   30 isoC.sub.4 H.sub.9                                                                        CN     red     1.87    ◯                             31 nC.sub.4 H.sub.9                                                                          CN     red     1.77    Δ                                   32 --         --     --      --      --                                        33 nC.sub.4 H.sub.9                                                                          CN     red     1.72    ◯                             34 --         --     --      --      --                                        35 nC.sub.4 H.sub.9                                                                          CN     red     1.73    Δ                                   36 nC.sub.4 H.sub.9                                                                          CN     red     1.81    ◯                             37 --         --     --      --      --                                        38 --         --     --      --      --                                        39 nC.sub.4 H.sub.9                                                                          CN     red     1.75    ◯                             40 nC.sub.4 H.sub.9                                                                          CN     red     1.75    Δ                                   41 --         --     --      --      --                                        42 tert-C.sub.4 H.sub.9                                                                      CN     red     1.77    Δ                                   43 --         --     --      --      --                                        44 nC.sub.4 H.sub.9                                                                          CN     red     1.78    Δ                                   45 2-thiazolyl                                                                               CN     red     1.83    ◯                             46 nC.sub.4 H.sub.9                                                                          CN     red     1.84    ◯                             47 nC.sub.4 H.sub.9                                                                          CN     red     1.82    ◯                             48 nC.sub.4 H.sub.9                                                                          CN     red     1.71    ◯                             49 nC.sub.4 H.sub.9                                                                          CN     red     1.70    Δ                                   50 nC.sub.4 H.sub.9                                                                          CN     red     1.76    Δ                                   51 nC.sub.4 H.sub.9                                                                          CN     red     1.67    ◯                             52 nC.sub.4 H.sub.9                                                                          CN     .red    1.82    ◯                             53 nC.sub.4 H.sub.9                                                                          CN     red     1.80    Δ                                   54 --         --     --      --      --                                        55 2-benzothiazolyl                                                                          CN     red     1.76    ◯                             57 --         --     --      --      --                                        58 Ph         CN     red     1.70    Δ                                   59 2-(4,5-dicyano)thiazolyl                                                                  CN     red     1.80    ◯                             60 Ph         CN     red     1.83    ◯                             __________________________________________________________________________

(8) Dyes having the following structure: ##STR27## wherein Z stands for a hydrogen atom or a cyano group.

Specific examples of the dyes represented by the general formula 8 and the performance thereof in the case of use in a thermal transfer sheet which will be described later are given in the following Table 8.

                                      TABLE 8                                      __________________________________________________________________________      ##STR28##                                                                      ##STR29##                                                                     No.                                                                               R.sub.1       R.sub.2  2,3-R.sub.3                                                                           4-R.sub.3                                                                             X      Y                               __________________________________________________________________________     8-common to a to b                                                             1  C.sub.2 H.sub.5                                                                              C.sub.2 H.sub.5                                                                         H      H                                             2  C.sub.2 H.sub.5                                                                              C.sub.2 H.sub.5                                                                         CH.sub.3                                                                              H                                             3  C.sub.2 H.sub.5                                                                              C.sub.2 H.sub.5                                                                         NHCOCH.sub.3                                                                          H                                             4  C.sub.2 H.sub.4 CN                                                                           C.sub.2 H.sub.5                                                                         NHCOCH.sub.3                                                                          H                                             5  C.sub.2 H.sub.4 OH                                                                           C.sub.2 H.sub.5                                                                         NHSO.sub.2 CH.sub.3                                                                   H                                             6  C.sub.2 H.sub.4 OCH.sub.3                                                                    C.sub.2 H.sub.5                                                                         NHCOC.sub.2 H.sub.5                                                                   H                                             7  C.sub.2 H.sub.4 COOCH.sub.3                                                                  C.sub.2 H.sub.5                                                                         CH.sub.3                                                                              H                                             8  C.sub.2 H.sub.4 OCOCH.sub.3                                                                  C.sub.2 H.sub.5                                                                         CH.sub.3                                                                              H                                             9  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                                 C.sub.2 H.sub.5                                                                         CH.sub.3                                                                              H                                             10 C.sub.2 H.sub.4 OCH.sub.2 Ph                                                                 C.sub.2 H.sub.5                                                                         OH     H                                             11 CH.sub.2 OCOOPh                                                                              C.sub.2 H.sub.5                                                                         OCH.sub.3                                                                             H                                             12 C.sub.2 H.sub.4 OCH.sub.3                                                                    C.sub.2 H.sub.5                                                                         NHCOC.sub.2 H.sub.5                                                                   H                                             13 C.sub.2 H.sub.4 OCOCH.sub.3                                                                  C.sub.2 H.sub.5                                                                         OH     H                                             14 C.sub.2 H.sub.5                                                                              C.sub.2 H.sub.5                                                                         H      H      CN                                     15 C.sub.2 H.sub.5                                                                              C.sub.2 H.sub.5                                                                         NHCOCH.sub.3                                                                          H      CN(a)  CN(b)                                                                   alone  alone                           16 C.sub.2 H.sub.5                                                                              C.sub.2 H.sub.5                                                                         NHSO.sub.2 CH.sub.3                                                                   H      CN(a)  CN(b)                                                                   alone  alone                           17 CH.sub.2 CHCH.sub.2                                                                          C.sub.2 H.sub.4 OMe                                                                     CH.sub.3                                                                              H                                             18 CH.sub.2 CHCH.sub.2                                                                          C.sub.2 H.sub.5                                                                         NHCOCH.sub.3                                                                          H                                             19 C.sub.2 H.sub.4 OPh                                                                          C.sub.2 H.sub.5                                                                         CH.sub.3                                                                              H                                             20 C.sub.2 H.sub.5                                                                              C.sub.2 H.sub.5                                                                         CH.sub.3                                                                              H      CN(b)  CN(b)                                                                   alone  alone                           21 MI.sub.2 H.sub.5                                                                             C.sub.2 H.sub.5                                                                         NHCOCH.sub.3                                                                          H      CN(a)  CN(b)                                                                   alone  alone                           22 C.sub.2 H.sub.4 O                                                                            C.sub.2 H.sub.5                                                                         NHCOCH.sub.3                                                                          H                                                (4cyclohexylphenyl)                                                         23 C.sub.2 H.sub.5                                                                              C.sub.2 H.sub.5                                                                         NHCOCH.sub.3  NHCOCH.sub.3                                                                          NHCOCH.sub.3                                                            (a) alone                                                                             (b) alone                       24 C.sub.2 H.sub.5                                                                              C.sub.2 H.sub.5                                                                         CH.sub.3      CH.sub.3                               25 combining of R.sub.1 with R.sub.2                                                                     NHCOCH.sub.3                                            to form C.sub.5 H.sub.10                                                    26 combining of R.sub.1 with R.sub.2                                                                     CH.sub.3                                                to form C.sub.5 H.sub.10                                                    27 combining of R.sub.1 with R.sub.2                                                                     NHCOCH.sub.3  CN(a)  CN(b)                              to form C.sub.5 H.sub.10             alone  alone                           28 combining of R.sub.1 with R.sub.2                                                                     NHCOCH.sub.3                                            to form C.sub.2 H.sub.4 OC.sub.2 H.sub.4                                    29 combining of R.sub.1 with R.sub.2                                                                     CH.sub.3                                                to form C.sub.2 H.sub.4 OC.sub.2 H.sub.4                                    8-a alone                                                                      30 combining of  C.sub.2 H.sub.5                                                                         NHCOCH.sub.3                                            R.sub.1 with X to                                                              form C.sub.3 H.sub.6                                                        31 combining of  C.sub.2 H.sub.5                                                                         CH.sub.3                                                R.sub.1 with X to                                                              form C.sub.3 H.sub.6                                                        32 combining of  C.sub.2 H.sub.4 OCOCH.sub.3                                                             NHCOCH.sub.3                                            R.sub.1 with X to                                                              form C.sub.3 H.sub.6                                                        33 combining of  C.sub.2 H.sub.4 OCH.sub.3                                                               OH                                                      R.sub.1 with X to                                                              form C.sub.3 H.sub.6                                                        8-b alone                                                                      34 combining of  C.sub.2 H.sub.5                                                                         NHCOCH.sub.3                                            R.sub.1 with X to                                                              form C.sub.3 H.sub.6                                                        35 combining of  C.sub.2 H.sub.5                                                                         CH.sub.3                                                R.sub.1 with X to                                                              form C.sub.3 H.sub.6                                                        36 combining of  C.sub.2 H.sub.4 OCH.sub.3                                                               NHCOCH.sub.3                                            R.sub.1 with X to                                                              form C.sub.3 H.sub.6                                                        37 combining of  C.sub.2 H.sub.4 OCOCH.sub.3                                                             NHCOCH.sub.3                                            R.sub.1 with X to                                                              form C.sub.3 H.sub.6                                                        38 combining of  C.sub.2 H.sub.5                                                                         CH.sub.3      CH.sub.3                                  R.sub.1 with X to                                                              form C.sub.3 H.sub.6                                                        39 combining of R.sub.1 with X or                                                                        NHCOCH.sub.3                                            R.sub.2 and Y to form C.sub.3 H.sub.6                                       40 combining of R.sub.1 with X or                                                                        CH.sub.3                                                R.sub.2 with Y to form C.sub.3 H.sub.6                                      __________________________________________________________________________     No.                                                                               hue                coloring density                                                                        light fastness                                  __________________________________________________________________________     (8-a Z: H)                                                                     1  yellow             2.10     Δ                                         2  yellow             2.07     ◯                                   3  yellow             1.95     ◯                                   4  yellow             1.92     ◯                                   5  yellow             1.89     ◯                                   6  yellow             1.93     ◯                                   7  yellow             1.95     ◯                                   8  yellow             1.95     ◯                                   9  yellow             1.86     ◯                                   10 yellow             1.82     Δ                                         11 yellow             1.80     ◯                                   12 yellow             1.93     ◯                                   13 yellow             1.90     ◯                                   14 yellow             1.97     Δ                                         15 yellow             1.91     ◯                                   16 yellow             1.93     ◯                                   17 yellow             1.94     ◯                                   18 yellow             1.88     ◯                                   19 yellow             1.85     ◯                                   20 yellow             1.92     ◯                                   21 yellow             1.97     ◯                                   22 yellow             1.96     ◯                                   23 yellow             1.82     ◯                                   24 yellow             2.03     ◯                                   25 yellow             1.93     ◯                                   26 yellow             2.06     ◯                                   27 yellow             1.84     ◯                                   28 yellow             1.90     ◯                                   29 yellow             2.02     ◯                                   30 yellow             1.91     ◯                                   31 yellow             2.07     ◯                                   32 yellow             1.85     ◯                                   33 yellow             1.89     Δ                                         34 --                 --       --                                              35 --                 --       --                                              36 --                 --       --                                              37 --                 --       --                                              38 --                 --       --                                              39 --                 --       --                                              40 --                 --       --                                              (8-a Z: CN)                                                                    1  red                1.97     Δ                                         2  red                1.98     ◯                                   3  red                1.93     ◯                                   4  red                1.87     ◯                                   5  red                1.82     ◯                                   6  red                1.83     ◯                                   7  red                1.87     ◯                                   8  red                1.86     ◯                                   9  red                1.81     ◯                                   10 red                1.77     Δ                                         11 red                1.73     ◯                                   12 red                1.82     ◯                                   13 red                1.80     Δ                                         14 red                1.92     Δ                                         15 red                1.85     ◯                                   16 red                1.84     ◯                                   17 red                1.90     Δ                                         18 red                1.83     ◯                                   19 red                1.79     ◯                                   20 red                1.90     ◯                                   21 red                1.92     ◯                                   22 red                1.90     ◯                                   23 red                1.84     ◯                                   24 red                1.97     Δ                                         25 red                1.88     ◯                                   26 red                1.97     ◯                                   27 red                1.80     ◯                                   28 red                1.74     ◯                                   29 red                1.91     ◯                                   30 red                1.83     ◯                                   31 red                1.99     ◯                                   32 red                1.77     ◯                                   33 red                1.80     Δ                                         34 --                 --       --                                              35 --                 --       --                                              36 --                 --       --                                              37 --                 --       --                                              38 --                 --       --                                              39 --                 --       --                                              40 --                 --       --                                              (8-b Z: H)                                                                     1  yellow             2.07     Δ                                         2  yellow             2.03     Δ                                         3  yellow             1.98     ◯                                   4  yellow             1. 90    ◯                                   5  yellow             1.85     ◯                                   6  yellow             1.90     ◯                                   7  yellow             1.99     ◯                                   8  yellow             2.00     ◯                                   9  yellow             1.82     ◯                                   10 yellow             1.79     Δ                                         11 yellow             1.83     ◯                                   12 yellow             1.91     ◯                                   13 yellow             1.95     Δ                                         14 yellow             2.00     Δ                                         15 yellow             1.94     ◯                                   16 yellow             1.89     ◯                                   17 yellow             1.91     ◯                                   18 yellow             1.90     ◯                                   19 yellow             1.88     ◯                                   20 yellow             1.85     Δ                                         21 yellow             1.94     ◯                                   22 yellow             2.02     ◯                                   23 yellow             1.88     ◯                                   24 yellow             2.05     ◯                                   25 yellow             1.99     ◯                                   26 yellow             2.10     ◯                                   27 yellow             1.87     ◯                                   28 yellow             1.93     ◯                                   29 yellow             2.00     Δ                                         30 --                 --       --                                              31 --                 --       --                                              32 --                 --       --                                              33 --                 --       --                                              34 yellow             1.87     ◯                                   35 yellow             1.96     ◯                                   36 yellow             1.90     ◯                                   37 yellow             1.86     ◯                                   38 yellow             2.01     ◯                                   39 yellow             1.83     ◯                                   40 yellow             1.92     ◯                                   (8-b Z: CN)                                                                    1  red                2.15     Δ                                         2  red                2.07     Δ                                         3  red                2.02     ◯                                   4  red                1.98     ◯                                   5  red                1.93     ◯                                   6  red                2.01     ◯                                   7  red                2.08     ◯                                   8  red                2.13     ◯                                   9  red                1.94     ◯                                   10 red                1.91     Δ                                         11 red                1.84     ◯                                   12 red                1.98     ◯                                   13 red                2.03     Δ                                         14 red                2.18     Δ                                         15 red                2.04     ◯                                   16 red                1.93     ◯                                   17 red                1.98     Δ                                         18 red                1.95     ◯                                   19 red                1.93     ◯                                   20 red                1.91     Δ                                         21 red                2.03     ◯                                   22 red                2.10     ◯                                   23 red                1.99     ◯                                   24 red                2.12     Δ                                         25 red                2.08     ◯                                   26 red                2.18     ◯                                   27 red                2.00     ◯                                   28 red                2.06     ◯                                   29 red                2.11     Δ                                         30 --                 --       --                                              31 --                 --       --                                              32 --                 --       --                                              33 --                 --       --                                              34 red                1.94     ◯                                   35 red                2.03     Δ                                         36 red                1.99     ◯                                   37 red                1.94     ◯                                   38 red                2.15     Δ                                         39 red                1.93     ◯                                   40 red                2.04     ◯                                   __________________________________________________________________________

(9) Dyes having the following structure: ##STR30## wherein R₄ and R₅ stand for a hydrogen atoms, a cyano group, a nitro group or a substituted or unsubstituted alkyl group, aryl group or aromatic heterocyclic group, a formylamino group, a sulfonylamino group, an alkoxycarbonyl group, a carbamoyl group or a sulfamoyl group.

Specific examples of the dyes represented by the general formula 9 and the performance thereof in the case of use in a thermal transfer sheet which will be described later are given in the following Table 9. ##STR31## wherein R₁ to R₅, X, Y and n are as defined above.

                                      TABLE 9                                      __________________________________________________________________________     No R.sub.1  R.sub.2  2,3-R.sub.3                                                                           4-R.sub.3                                                                          X      Y                                       __________________________________________________________________________     9- common to a to b                                                            1  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.5                                                                       --CH.sub.3                                                2  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.5                                                                       --NHCOCH.sub.3                                            3  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.5                                                                       --NHSO.sub.2 CH.sub.3                                     4  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.5                                                                       --H                                                       5  --C.sub.2 H.sub.4 OCH.sub.3                                                             --C.sub.2 H.sub.5                                                                       --CH.sub.3                                                6  --C.sub.2 H.sub.4 OCH.sub.3                                                             --C.sub.2 H.sub.5                                                                       --NHCOCH.sub.3                                            7  --C.sub.2 H.sub.4 OCOCH.sub.3                                                           --C.sub.2 H.sub.5                                                                       --NHCOCH.sub.3                                            8  --C.sub.2 H.sub.4 OCOOCH.sub.3                                                          --C.sub.2 H.sub.5                                                                       --CH.sub.3                                                9  --C.sub.2 H.sub.4 OCOOPh                                                                --CH.sub.3                                                                              --NHCOCH.sub.3                                            10 --C.sub.2 H.sub.4 OCH.sub.2 Ph                                                          --C.sub.2 H.sub.5                                                                       --CH.sub.3                                                11 --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.5                                                                       --NHCOCH.sub.3                                                                            --NHCOCH.sub.3                                                                        --NHCOCH.sub.3                                                          (a) alone                                                                             (b) alone                               12 --C.sub.2 H.sub.4 CN                                                                    --C.sub.2 H.sub.5                                                                       --CH.sub.3                                                13 --C.sub.2 H.sub.4 OCH.sub.3                                                             --C.sub.2 H.sub.4 OCH.sub.3                                                             --CH.sub.3                                                14 --CH.sub.2 CH═CH.sub.2                                                              --C.sub.2 H.sub.5                                                                       --H                                                       15 --C.sub.2 H.sub.4 OCO--CH.sub.3                                                         --C.sub.2 H.sub.4 OCO--CH.sub.3                                                         --NHCOCH.sub.3                                            16 --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.5                                                                       --CH.sub.3                                                                            --CH.sub.3                                         17 combining of R.sub.1 with R.sub.2                                                                --CH.sub.3                                                   to form --C.sub.5 H.sub.10 --                                               18 combining of R.sub.1 with R.sub.2                                                                --NHCOCH.sub.3                                            2-furyl                                                                           --Ph                                                                           to form --C.sub.2 H.sub.4 OC.sub.2 H.sub.4 --                               9-a alone                                                                      19 combining of R.sub.1                                                                    --C.sub.2 H.sub.5                                                                       --CH.sub.3                                                   with X to form                                                                 --C.sub.3 H.sub.6 --                                                        20 combining of R.sub.1                                                                    --C.sub.2 H.sub.4 OCO--CH.sub.3                                                         --NHCOCH.sub.3                                               with X to form                                                                 --C.sub.3 H.sub.6 --                                                        9-b alone                                                                      21 combining of R.sub.1                                                                    --C.sub.2 H.sub.5                                                                       --CH.sub.3                                                   with Y to form                                                                 --C.sub.3 H.sub.6 --                                                        22 combining of R.sub.1                                                                    --C.sub.2 H.sub.4 OCO--CH.sub.3                                                         --NHCOCH.sub.3                                               with Y to form                                                                 --C.sub.3 H.sub.6 --                                                        23 combining of R.sub.1 with X or                                                                   --NHCOCH.sub.3                                               R.sub.2 with Y to form --C.sub.3 H.sub.6 --                                 24 combining of R.sub.1 with X or                                                                   --NHSO.sub.2 CH.sub.3                                        R.sub.2 with Y to form --C.sub.3 H.sub.6 --                                 __________________________________________________________________________                                   coloring                                                                           light                                        No.                                                                               R.sub.4     R.sub.5                                                                             hue       density                                                                            fastness                                     __________________________________________________________________________     (9-a)                                                                          1  --Ph        --Ph blue      2.20                                                                               Δ                                      2  --Ph        --Ph blue      2.03                                                                               ◯                                3  --Ph        --Ph blue      2.04                                                                               ◯                                4  --Ph        --Ph blue      2.18                                                                               Δ                                      5  --Ph        --Ph blue      2.14                                                                               Δ                                      6  --Ph        --Ph blue      1.99                                                                               ◯                                7  --Ph        --Ph blue      1.93                                                                               ◯                                8  --Ph        --Ph blue      2.07                                                                               Δ                                      9  --Ph        --Ph blue      1.90                                                                               ◯                                10 --Ph        --Ph blue      1.98                                                                               Δ                                      11 --Ph        --Ph blue      1.90                                                                               ◯                                12 --Ph        --Ph blue      2.10                                                                               Δ                                      13 --Ph        --Ph blue      2.04                                                                               Δ                                      14 --Ph        --Ph blue      2.16                                                                               Δ                                      15 --Ph        --Ph blue      2.08                                                                               ◯                                16 --Ph        --Ph blue      2.18                                                                               Δ                                      17 2-thienyl   2-thienyl                                                                           blue      2.17                                                                               ◯                                18 3-thienyl   2-thienyl                                                                           blue      1.87                                                                               ◯                                19 2-thienyl   3-thienyl                                                                           blue      2.12                                                                               ◯                                20 3-thienyl   3-thienyl                                                                           blue      1.92                                                                               ◯                                21 --          --   --        --  --                                           22 --          --   --        --  --                                           23 --          --   --        --  --                                           24 --          --   --        --  --                                           (9-b)                                                                          1  --Ph        --Ph blue      1.98                                                                               Δ                                      2  --Ph        --Ph blue      1.84                                                                               ◯                                3  --Ph        --Ph blue      1.86                                                                               ◯                                4  --Ph        --Ph blue      1.93                                                                               Δ                                      5  --Ph        --Ph blue      1.95                                                                               Δ                                      6  --Ph        --Ph blue      1.77                                                                               ◯                                7  --Ph        --Ph blue      1.72                                                                               ◯                                8  --Ph        --Ph blue      1.90                                                                               Δ                                      9  --Ph        --Ph blue      1.71                                                                               ◯                                10 --Ph        --Ph blue      1.74                                                                               Δ                                      11 --Ph        --Ph blue      1.70                                                                               ◯                                12 --Ph        --Ph blue      1.92                                                                               Δ                                      13 --Ph        --Ph blue      1.88                                                                               Δ                                      14 --Ph        --Ph blue      1.94                                                                               Δ                                      15 --Ph        --Ph blue      1.88                                                                               ◯                                16 --Ph        --Ph blue      1.91                                                                               Δ                                      17 2-thienyl   2-thienyl                                                                           blue      1.72                                                                               ◯                                18 3-thienyl   2-thienyl                                                                           blue      1.73                                                                               ◯                                19 --          --   --        --  --                                           20 --          --   --        --  --                                           21 --Ph        3-thienyl                                                                           blue      1.68                                                                               ◯                                22 --Ph        2-thienyl                                                                           blue      1.69                                                                               ◯                                23 3-thienyl   --Ph blue      1.70                                                                               ◯                                24 2-thienyl   --Ph blue      1.66                                                                               ◯                                __________________________________________________________________________

(10) Dyes having the following structure: ##STR32## wherein K stands for --N═N--; R₄ and R₅ stand for a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group or a substituted or unsubstituted alkyl group, allyl group, aryl group, aralkyl group, alkoxyalkyl group, alkoxy group, heterocyclic group, aralkylalkoxyalkyl group, carbamoyl group, sulfamoyl group, oxycarbonylalkyl group, oxycarbonyl group, carboxyalkyl group, formylamino group, sulfonylamino group or amino group; R₆ stands for a hydrogen atom or a substituted or unsubstituted alkyl group, allyl group, aryl group, aralkyl group, alkoxyalkyl group, aralkyloxyalkyl group, allyloxyalkyl group, aryloxyalkyl group, alkoxycarbonylalkyl group, carboxyalkyl group, heterocyclic group, carbamoyl group, sulfamoyl group or cycloalkyl group.

Specific examples of the dye represented by the general formula 10 and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 10.

                                      TABLE 10                                     __________________________________________________________________________      ##STR33##                                                                      ##STR34##                                                                      ##STR35##                                                                      ##STR36##                                                                      ##STR37##                                                                      ##STR38##                                                                      ##STR39##                                                                      ##STR40##                                                                      ##STR41##                                                                     No.                                                                               R.sub.1   R.sub.2                                                                               R.sub.3 R.sub.4                                                                             R.sub.5                                                                              R.sub.6                                                                              hue coloring                                                                               light                 __________________________________________________________________________                                                              fastness              (10-1-a K: NN)                                                                 1  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       H       CH.sub.3                                                                            H     Ph    red 1.81    Δ               2  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.87    ◯         3  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    CN   CH.sub.3                                                                             Ph    red 1.76    Δ               4  C.sub.2 H.sub.4 OCOCH.sub.3                                                              C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   CH.sub.3                                                                             Ph    red 1.87    Δ               5  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.4 OMe                                                                   NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.97    ◯         6  C.sub.2 H.sub.4 CN                                                                       CH.sub.3                                                                              CH.sub.3                                                                               CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.92    Δ               7  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                             C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.82    ◯         8  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                            Ph    nC.sub.4 H.sub.9                                                                     red 1.88    Δ               9  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHCOC.sub.2 H.sub.5                                                                    NO.sub.2                                                                            nC.sub.4 H.sub.9                                                                     Ph    red 1.80    Δ               10 C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           nC.sub.4 H.sub.9                                                                    CN    Ph    red 1.81    Δ               11 C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               nC.sub.4 H.sub.9                                                                    CN    CH.sub.2Ph                                                                           red 1.78    Δ               12 C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           nC.sub.4 H.sub.9                                                                    CN    Ph    red 1.72    ◯         13 C.sub.2 H.sub.4 OCOCH.sub.3                                                              C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               nC.sub.4 H.sub.9                                                                    CN    CH.sub.2Ph                                                                           red 1.89    Δ               (10-3-a K: NN)                                                                 1  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   nC.sub.4 H.sub.9                                                                     CH.sub.2 Ph                                                                          red 1.80    ◯         2  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   nC.sub.4 H.sub.9                                                                     CH.sub.2 Ph                                                                          red 1.83    ◯         3  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    CN   CH.sub.3                                                                             CH.sub.2 Ph                                                                          red 1.76    Δ               4  C.sub.2 H.sub.4 OCOCH.sub.3                                                              C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   CH.sub.3                                                                             CH.sub.2 Ph                                                                          red 1.70    Δ               5  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.4 OMe                                                                   NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.73    Δ               6  C.sub.2 H.sub.4 CN                                                                       CH.sub.3                                                                              CH.sub.3                                                                               CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.82    Δ               7  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                             C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.87    Δ               8  --        --     --      --   --    --    --  --      --                    9  --        --     --      --   --    --    --  --      --                    (10-2-a K: NN)                                                                 1  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.84    ◯         2  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.83    ◯         3  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    CN   CH.sub.3                                                                             Ph    red 1.77    Δ               4  C.sub.2 H.sub.4 OCOCH.sub.3                                                              C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   CH.sub.3                                                                             Ph    red 1.82    ◯         5  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.4 OMe                                                                   NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.90    ◯         6  C.sub.2 H.sub.4 CN                                                                       CH.sub.3                                                                              CH.sub.3                                                                               CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.88    ◯         7  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                             C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.84    Δ               8  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                            Ph    nC.sub.4 H.sub.9                                                                     red 1.80    Δ               9  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHCOC.sub.2 H.sub.5                                                                    NO.sub.2                                                                            nC.sub.4 H.sub.9                                                                     Ph    red 1.76    Δ               10 C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   CN    Ph    red 1.89    ◯         (10-1-b K: NN)                                                                 1  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.78    Δ               2  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.83    ◯         3  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    CN   CH.sub.3                                                                             Ph    red 1.73    Δ               4  C.sub.2 H.sub.4 OCOCH.sub.3                                                              C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   CH.sub.3                                                                             Ph    red 1.89    ◯         5  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.4 OMe                                                                   NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.92    ◯         6  C.sub.2 H.sub.4 CN                                                                       CH.sub.3                                                                              CH.sub.3                                                                               CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.96    Δ               7  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                             C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.80    ◯         8  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                            Ph    nC.sub.4 H.sub.9                                                                     red 1.73    Δ               9  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHCOC.sub.2 H.sub.5                                                                    NO.sub.2                                                                            nC.sub.4 H.sub.9                                                                     Ph    red 1.75    Δ               10 C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   CN    CH.sub.2 Ph                                                                          red 1.84    ◯         (10-2-b K: NN)                                                                 1  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.77    Δ               2  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.80    ◯         3  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    CN   CH.sub.3                                                                             Ph    red 1.79    Δ               4  C.sub.2 H.sub.4 OCOCH.sub.3                                                              C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   CH.sub.3                                                                             Ph    red 1.82    Δ               5  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.4 OMe                                                                   NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.87    ◯         6  C.sub.2 H.sub.4 CN                                                                       CH.sub.3                                                                              CH.sub.3                                                                               CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.90    Δ               7  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                             C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.77    ◯         8  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                            Ph    nC.sub.4 H.sub.9                                                                     red 1.70    ◯         9  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHCOC.sub.2 H.sub.5                                                                    NO.sub.2                                                                            nC.sub.4 H.sub.9                                                                     Ph    red 1.72    ◯         (10-1-c K: NN)                                                                 1  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.18    Δ               2  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.85    ◯         3  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    CN   CH.sub.3                                                                             Ph    red 1.78    Δ               4  C.sub.2 H.sub.4 OCOCH.sub.3                                                              C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   CH.sub.3                                                                             Ph    red 1.89    Δ               5  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.4 OMe                                                                   NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.90    ◯         6  C.sub.2 H.sub.4 CN                                                                       CH.sub.3                                                                              CH.sub.3                                                                               CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.91    Δ               7  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                             C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.78    ◯         8  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    N92  Ph    nC.sub.4 H.sub.9                                                                     red 1.84    Δ               9  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHCOC.sub.2 H.sub.5                                                                    NO.sub.2                                                                            nC.sub.4 H.sub.9                                                                     Ph    red 1.75    Δ               10 C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           nC.sub.4 H.sub.9                                                                    CN    Ph    red 1.82    ◯         (10-2-c K: NN)                                                                 1  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.78    ◯         2  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.84    ◯         3  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    CN   CH.sub.3                                                                             Ph    red 1.78    Δ               4  C.sub.2 H.sub.4 OCOCH.sub.3                                                              C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   CH.sub.3                                                                             Ph    red 1.75    Δ               5  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.4 OMe                                                                   NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.70    ◯         6  C.sub.2 H.sub.4 CN                                                                       CH.sub.3                                                                              CH.sub.3                                                                               CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.84    Δ               7  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                             C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.85    Δ               8  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                            Ph    nC.sub.4 H.sub.9                                                                     red 1.72    ◯         9  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHCOC.sub.2 H.sub.5                                                                    NO.sub.2                                                                            nC.sub.4 H.sub.9                                                                     Ph    red 1.75    Δ               (10-3-c K: NN)                                                                 1  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.85    ◯         2  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   nC.sub.4 H.sub.9                                                                     Ph    red 1.82    ◯         3  C.sub.2 H.sub.4 QCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    CN   CH.sub.3                                                                             Ph    red 1.82    Δ               4  C.sub.2 H.sub.4 OCOCH.sub.3                                                              C.sub.2 H.sub.5                                                                       CH.sub.3                                                                               CN   CH.sub.3                                                                             Ph    red 1.77    Δ               5  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.4 OMe                                                                   NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.90    Δ               6  C.sub.2 H.sub.4 CN                                                                       CH.sub.3                                                                              CH.sub.3                                                                               CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.84    Δ               7  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                             C.sub.2 H.sub.5                                                                       NHCOCH.sub.3                                                                           CN   Ph    nC.sub.4 H.sub.9                                                                     red 1.78    Δ               8  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                            Ph    nC.sub.4 H.sub.9                                                                     red 1.76    Δ               9  C.sub.2 H.sub.4 OCH.sub.3                                                                C.sub.2 H.sub.5                                                                       NHCOC.sub.2 H.sub.5                                                                    NO.sub.2                                                                            nC.sub.4 H.sub.9                                                                     Ph    red 1.87    Δ               __________________________________________________________________________

(11) Dyes having the following structure: ##STR42## wherein K stands for --N═N--; R₄ and R₅ stand for a hydrogen atom, a halogen atom, a cyano group, a nitro group or a substituted or unsubstituted amino group, formylamino group, sulfonylamino group, alkyl group, allyl group, aryl group, aralkyl group, alkoxyalkyl group, aralkyloxyalkyl group, allyloxyalkyl group, aryloxyalkyl group, carbamoyl group, sulfamoyl group, oxycarbonyl group or heterocyclic group; R₆ stands for a hydrogen atom or a substituted or unsubstituted alkyl group, allyl group, aryl group, aralkyl group, alkoxyalkyl group, aralkyloxyalkyl group, allyloxyalkyl group, aryloxyalkyl group, alkoxycarbonylalkyl group, carboxyalkyl group, heterocyclic group, carbamoyl group, sulfamoyl group or cycloalkyl group.

Specific examples of the dye represented by the general formula 11 and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 11.

                                      TABLE 11                                     __________________________________________________________________________      ##STR43##                                                                      ##STR44##                                                                      ##STR45##                                                                      ##STR46##                                                                      ##STR47##                                                                      ##STR48##                                                                     No.                                                                               R.sub.1  R.sub.2 R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                           R.sub.6                                      __________________________________________________________________________     1  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        CH.sub.3                                                                              CN  Ph nC.sub.4 H.sub.9                             2  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                          CN  Ph nC.sub.4 H.sub.9                             3  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        NHSO.sub.2 CH.sub.3                                                                   CN  Ph nC.sub.4 H.sub.9                             4  C.sub.2 H.sub.4 OH                                                                      C.sub.2 H.sub.5                                                                        H      CN  Ph nC.sub.4 H.sub.9                             5  C.sub.2 H.sub.4 CN                                                                      C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                          CN  Ph nC.sub.4 H.sub.9                             6  C.sub.2 H.sub.4 OCH.sub.3                                                               C.sub.2 H.sub.5                                                                        CH.sub.3                                                                              CN  Ph nC.sub.4 H.sub.9                             7  C.sub.2 H.sub.4 OCOCH.sub.3                                                             C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                          NO.sub.2                                                                           Ph nC.sub.4 H.sub.9                             8  C.sub.2 H.sub.4 OCOCH.sub.3                                                             C.sub.2 H.sub.4 OCOCH.sub.3                                                            CH.sub.3                                                                              CN  Ph nC.sub.4 H.sub.9                             9  C.sub.2 H.sub.4 OCH.sub.3                                                               C.sub.2 H.sub.4 OMe                                                                    NHCOCH.sub.3                                                                          CN  Ph nC.sub.4 H.sub.9                             10 C.sub.2 CHCH.sub.2                                                                      C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                          CN  Ph isoC.sub.3 H.sub.7                           11 C.sub.2 H.sub.4 OCOOCH.sub.3                                                            C.sub.2 H.sub.5                                                                        CH.sub.3                                                                              CN  Ph nC.sub.4 H.sub.9                             __________________________________________________________________________     No.   hue         coloring density                                                                       light fastness                                       __________________________________________________________________________     11-1-a K: NN                                                                   1     red         1.64    ◯                                        2     red         1.81    ◯                                        3     red         1.77    ◯                                        4     red         1.74    Δ                                              5     red         1.79    Δ                                              6     red         1.83    ◯                                        7     red         1.72    ◯                                        8     red         1.69    ◯                                        9     red         1.73    ◯                                        10    red         1.76    Δ                                              11    red         1.70    Δ                                              11-1-b K: NN                                                                   1     red         1.65    ◯                                        2     red         1.83    ◯                                        3     red         1.75    ◯                                        4     red         1.76    Δ                                              5     red         1.78    Δ                                              6     red         1.83    ◯                                        7     red         1.71    ◯                                        8     red         1.65    ◯                                        9     red         1.74    ◯                                        10    red         1.76    Δ                                              11    red         1.74    Δ                                              11-1-c K: NN                                                                   1     red         1.73    ◯                                        2     red         1.91    ◯                                        3     red         1.75    ◯                                        4     red         1.81    Δ                                              5     red         1.86    ◯                                        6     red         1.73    ◯                                        7     red         1.80    ◯                                        8     red         1.70    Δ                                              9     red         1.77    ◯                                        10    red         1.84    Δ                                              11    red         1.81    ◯                                        11-2-a K: NN                                                                   1     red         1.74    ◯                                        2     red         1.83    ◯                                        3     red         1.79    ◯                                        4     red         1.84    Δ                                              5     red         1.89    ◯                                        6     red         1.83    Δ                                              7     red         1.73    ◯                                        8     red         1.71    ◯                                        9     red         1.79    ◯                                        10    red         1.75    ◯                                        11    red         1.73    Δ                                              11-2-b K: NN                                                                   1     red         1.72    ◯                                        2     red         1.83    ◯                                        3     red         1.79    ◯                                        4     red         1.81    Δ                                              5     red         1.91    ◯                                        6     red         1.87    Δ                                              7     red         1.76    ◯                                        8     red         1.72    ◯                                        9     red         1.77    ◯                                        10    red         1.73    ◯                                        11    red         1.76    Δ                                              11-2-c K: NN                                                                   1     red         1.74    ◯                                        2     red         1.79    ◯                                        3     red         1.81    ◯                                        4     red         1.84    Δ                                              5     red         1.87    ◯                                        6     red         1.81    ◯                                        7     red         1.71    Δ                                              8     red         1.73    Δ                                              9     red         1.68    ◯                                        10    red         1.74    ◯                                        11    red         1.77    Δ                                              __________________________________________________________________________

(12) Dyes having the following structure: ##STR49## wherein K stands for --N═N--; R₄ and R₅ stand for a hydrogen atom, a halogen atom, a cyano group, a nitro group or a substituted or unsubstituted amino group, formylamino group, sulfonylamino group, alkyl group, allyl group, aryl group, aralkyl group, alkoxyalkyl group, aralkyloxyalkyl group, aryloxyalkyl group, carbamoyl group, sulfamoyl group, oxycarbonyl group, heterocyclic group or alkoxycarbonyl group; R₆ stands for a hydrogen atom or a substituted or unsubstituted alkyl group, allyl group, aryl group, aralkyl group, alkoxyalkyl group, aralkyloxyalkyl group, allyloxyalkyl group, aryloxyalkyl group, alkoxycarbonylalkyl group, carboxyalkyl group, heterocyclic group, carbamoyl group, sulfamoyl group or cycloalkyl group.

Specific examples of the dye represented by the general formula 12 and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 12.

                                      TABLE 12                                     __________________________________________________________________________      ##STR50##                                                                      ##STR51##                                                                      ##STR52##                                                                     No.                                                                               R.sub.1  R.sub.2 R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.6                                     __________________________________________________________________________     1  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                          CN  CN  nC.sub.4 H.sub.9                            2  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        CH.sub.3                                                                              CN  CN  Ph                                          3  C.sub.2 H.sub.4 OCH.sub.3                                                               C.sub.2 H.sub.5                                                                        NHCOC.sub.2 H.sub.5                                                                   CN  CN  nC.sub.4 H.sub.9                            4  C.sub.2 H.sub.4 CN                                                                      C.sub.2 H.sub.5                                                                        CH.sub.3                                                                              CN  CN  nC.sub.4 H.sub.9                            5  C.sub.2 H.sub.4 OCOCH.sub.3                                                             C.sub.2 H.sub.5                                                                        NHSO2CH.sub.3                                                                         CN  CN  nC.sub.4 H.sub.9                            6  C.sub.2 H.sub.4 OCH.sub.3                                                               C.sub.2 H.sub.4 OMe                                                                    NHCOCH.sub.3                                                                          CN  CN  nC.sub.4 H.sub.9                            7  C.sub.2 H.sub.4 OCOOCH.sub.3                                                            C.sub.2 H.sub.5                                                                        H      CN  CN  nC.sub.6 H.sub.13                           8  C.sub.2 H.sub.4 OCOCH.sub.3                                                             C.sub.2 H.sub.4 OCOCH.sub.3                                                            CH.sub.3                                                                              CN  CN  cyclohexyl                                  9  C.sub.2 H.sub.4 OH                                                                      C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                          CN  CN  Ph                                          __________________________________________________________________________     No.   hue          coloring density                                                                        light fastness                                     __________________________________________________________________________     9-a K: NN                                                                      1     reddish orange                                                                              1.85     ◯                                      2     reddish orange                                                                              1.90     Δ                                            3     reddish orange                                                                              1.84     ◯                                      4     reddish orange                                                                              1.82     Δ                                            5     reddish orange                                                                              1.77     ◯                                      6     reddish orange                                                                              1.75     ◯                                      7     reddish orange                                                                              1.80     Δ                                            8     reddish orange                                                                              1.71     ◯                                      9     reddish orange                                                                              1.82     ◯                                      9-b K: NN                                                                      1     red          1.92     ◯                                      2     red          2.01     Δ                                            3     red          1.95     ◯                                      4     red          1.90     Δ                                            5     red          1.87     ◯                                      6     red          1.85     ◯                                      7     red          1.92     Δ                                            8     red          1.93     ◯                                      9     red          2.00     ◯                                      9-c K: NN                                                                      1     reddish orange                                                                              1.84     ◯                                      2     reddish orange                                                                              1.91     Δ                                            3     reddish orange                                                                              1.85     ◯                                      4     reddish orange                                                                              1.80     Δ                                            5     reddish orange                                                                              1.77     ◯                                      6     reddish orange                                                                              1.76     ◯                                      7     reddish orange                                                                              1.78     ◯                                      8     reddish orange                                                                              1.70     ◯                                      9     reddish orange                                                                              1.80     ◯                                      __________________________________________________________________________

(13) Dyes having the following structure: ##STR53## wherein K stands for --N═N--; and Q' stands for a ring comprising carbon, hydrogen, nitrogen, oxygen and sulfur and examples thereof include the following rings: ##STR54## wherein R₄ and R₅ stand for a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amide group or a substituted or unsubstituted alkyl group, allyl group, aryl group, aralkyl group, alkoxyalkyl group, alkoxy group, heterocyclic group, oxycarbonyl group, carboxyl group, carbamoyl group, sulfamoyl group, formylamino group or sulfonylamino group; R₆ stands for a hydrogen atom or a substituted or unsubstituted alkyl group, allyl group, aryl group, aralkyl group, heterocyclic group, alkoxyalkyl group, oxycarbonylalkyl group, carboxyalkyl group, carbamoyl group, sulfamoyl group or cycloalkyl group; and m is an integer of 0 to 4. ##STR55##

Specific examples of the dye represented by the general formula 13 and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 13.

                                      TABLE 13                                     __________________________________________________________________________                                              coloring                                                                           light                             No.                                                                               R.sub.1  R.sub.2   R.sub.3 R.sub.4 hue                                                                               density                                                                            fastness                          __________________________________________________________________________     13-1-a K: --N═N--                                                          1  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.5                                                                        --H     --H     red                                                                               1.92                                                                               Δ                           2  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OH                                                                     --CH3   2,3-di (isoC3H7)                                                                       red                                                                               1.82                                                                               ◯                     3  --C.sub.2 H.sub.5                                                                       --CH═CH.sub.2                                                                        --H     2-C.sub.2 H.sub.4 Ph                                                                   red                                                                               1.78                                                                               Δ                           4  --C.sub.2 H.sub.5                                                                       --Ph      --Cl    4-OC.sub.4 H.sub.9                                                                     red                                                                               1.80                                                                               Δ                           5  --C.sub.2 H.sub.5                                                                       --CH═CHOCOCH.sub.3                                                                   --NHCOCH3                                                                              2-NHCOCH.sub.3                                                                         red                                                                               1.75                                                                               ◯                     6  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH    --H     red                                                                               1.83                                                                               ◯                     7  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO2CH3                                                                             2-SO.sub.2 NHCH.sub.3                                                                  red                                                                               1.72                                                                               ◯                     8  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH3                                                                              3-CN    red                                                                               1.77                                                                               Δ                           9  --C.sub.2 H.sub.5                                                                       --H       --NHCOCH3                                                                              2-NO.sub.2                                                                             red                                                                               1.75                                                                               Δ                           10 --C.sub.2 H.sub.5                                                                       --CH2Ph   --OC.sub.2 H.sub.5                                                                     1-COOC.sub.3 H.sub.7                                                                   red                                                                               1.81                                                                               Δ                           11 --C.sub.2 H.sub.4 --COCH.sub.3                                                          --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --CONHCH3                                                                              1-Ph    red                                                                               1.76                                                                               ◯                     12 --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OCOPh                                                                  --SO2NHC3H7                                                                            1-CH═CH(CH.sub.3)                                                                  red                                                                               1.74                                                                               ◯                     13-1-b K: --N═N--                                                          1  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.5                                                                        --H     --H     red                                                                               1.91                                                                               Δ                           2  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OH                                                                     --CH3   2,3-di (isoC3H7)                                                                       red                                                                               1.88                                                                               ◯                     3  --C.sub.2 H.sub.5                                                                       --CH═CH.sub.2                                                                        --H     2-C.sub.2 H.sub.4 Ph                                                                   red                                                                               1.78                                                                               Δ                           4  --C.sub.2 H.sub.5                                                                       --Ph      --Cl    4-OC.sub.4 H.sub.9                                                                     red                                                                               1.80                                                                               Δ                           5  --C.sub.2 H.sub.5                                                                       --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                         2-NHCOCH.sub.3                                                                         red                                                                               1.74                                                                               ◯                     6  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH    --H     red                                                                               1.77                                                                               ◯                     7  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO2CH3                                                                             2-SO.sub.2 NHCH.sub.3                                                                  red                                                                               1.77                                                                               Δ                           8  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                         3-CN    red                                                                               1.77                                                                               Δ                           9  --C.sub.2 H.sub.5                                                                       --H       --NHCOCH.sub.3                                                                         2-NO.sub.2                                                                             red                                                                               1.80                                                                               Δ                           10 --C.sub.2 H.sub.5                                                                       --CH2Ph   --OC.sub.2 H.sub.5                                                                     1-COOC.sub.3 H.sub.7                                                                   red                                                                               1.83                                                                               Δ                           11 --C.sub.2 H.sub.4 --COCH.sub.3                                                          --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --CONHCH.sub.3                                                                         1-Ph    red                                                                               1.82                                                                               ◯                     12 --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OCOPh                                                                  --SO2NHC3H7                                                                            1-CH═CH(CH.sub.3)                                                                  red                                                                               1.79                                                                               ◯                     13-1-c K: --N═N--                                                          1  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.5                                                                        --H     --H     red                                                                               1.93                                                                               Δ                           2  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                             2,3-di (isoC3H7)                                                                       red                                                                               1.80                                                                               ◯                     3  --C.sub.2 H.sub.5                                                                       --CH═CH.sub.2                                                                        --H     2-C.sub.2 H.sub.4 Ph                                                                   red                                                                               1.77                                                                               Δ                           4  --C.sub.2 H.sub.5                                                                       --Ph      --Cl    4-OC.sub.4 H.sub.9                                                                     red                                                                               1.81                                                                               Δ                           5  --C.sub.2 H.sub.5                                                                       --CH═CHOCOCH.sub.3                                                                   --NHCOCH3                                                                              2-NHCOCH.sub.3                                                                         red                                                                               1.74                                                                               ◯                     6  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH    --H     red                                                                               1.82                                                                               ◯                     7  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO2CH3                                                                             2-SO.sub.2 NHCH.sub.3                                                                  red                                                                               1.77                                                                               ◯                     8  --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH3                                                                              3-CN    red                                                                               1.76                                                                               Δ                           9  --C.sub.2 H.sub.5                                                                       --H       --NHCOCH3                                                                              2-NO.sub.2                                                                             red                                                                               1.75                                                                               Δ                           10 --C.sub.2 H.sub.5                                                                       --CH2Ph   --OC.sub.2 H.sub.5                                                                     1-COOC.sub.3 H.sub.7                                                                   red                                                                               1.79                                                                               Δ                           11 --C.sub.2 H.sub.4 O--COCH.sub.3                                                         --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --CONHCH3                                                                              1-Ph    red                                                                               1.78                                                                               ◯                     12 --C.sub.2 H.sub.5                                                                       --C.sub.2 H.sub.4 OCOOPh                                                                 --SO2NHC3H7                                                                            1-CH═CH(CH.sub.3)                                                                  red                                                                               1.72                                                                               ◯                     __________________________________________________________________________     NO.  R.sub.1   R.sub.2     R.sub.3 R.sub.4                                                                             R.sub.5                                __________________________________________________________________________     (13-2-a K: --N═N--)                                                        1    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.5                                                                          --H     --H  --H                                    2    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OH                                                                       --CH3   --H  --C.sub.2 H.sub.5                      3    --C.sub.2 H.sub.5                                                                        --CH═CH.sub.2                                                                          --H     --CH3                                                                               --CH3                                  4    --C.sub.2 H.sub.5                                                                        --Ph        --Cl    --CH3                                                                               --OC.sub.2 H.sub.5                     5    --C.sub.2 H.sub.5                                                                        --CH═CHOCOCH.sub.3                                                                     --NHCOCH3                                                                              --CH.sub.3                                                                          --C.sub.2 H.sub.4 Ph                   6    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 COOCH.sub.3                                                              --OH    --CH3                                                                               --NHCOCH3                              7    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       --NHSO2CH3                                                                             --H  --NHCOCH.sub.3                         8    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OCOOPh                                                                   --NHCOCH3                                                                              --H  --CN                                   9    --C.sub.2 H.sub.5                                                                        --H         --NHCOCH3                                                                              --H  --NO.sub.2                             10   --C.sub.2 H.sub.5                                                                        --CH2Ph     --OC.sub.2 H.sub.5                                                                     --H  --Cl                                   11   --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --C.sub.2 H.sub.4 OCOCH.sub.3                                                              --CONHCH3                                                                              --H  --Ph                                   12   --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OCOPh                                                                    --SO2NHC3H7                                                                            --H  --CH═CH.sub.2                      __________________________________________________________________________     No.                                                                               hue               coloring density                                                                       light fastness                                    __________________________________________________________________________     1  red               1.89    Δ                                           2  red               1.87    ◯                                     3  red               1.80    Δ                                           4  red               1.83    Δ                                           5  red               1.81    ◯                                     6  red               1.92    ◯                                     7  red               1.83    ◯                                     8  red               1.79    ◯                                     9  red               1.75    ◯                                     10 red               1.80    Δ                                           11 red               1.77    ◯                                     12 red               1.74    ◯                                     __________________________________________________________________________     (13-2-b K: --N═N--)                                                        NO.  R.sub.1   R.sub.2     R.sub.3 R.sub.4                                                                             R.sub.5                                __________________________________________________________________________     1    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.5                                                                          --H     --H  --H                                    2    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OH                                                                       --CH3   --H  --C.sub.2 H.sub.5                      3    --C.sub.2 H.sub.5                                                                        --CH═CH.sub.2                                                                          --H     --CH3                                                                               --CH3                                  4    --C.sub.2 H.sub.5                                                                        --Ph        --Cl    --CH3                                                                               --OC.sub.2 H.sub.5                     5    --C.sub.2 H.sub.5                                                                        --CH═CHOCOCH.sub.3                                                                     --NHCOCH.sub.3                                                                         --CH.sub.3                                                                          --C.sub.2 H.sub.4 Ph                   6    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 COOCH.sub.3                                                              --OH    --CH3                                                                               --NHCOCH3                              7    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       --NHSO2CH.sub.3                                                                        --H  --NHCOCH.sub.3                         8    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OCOOPh                                                                   --NHCOCH.sub.3                                                                         --H  --CN                                   9    --C.sub.2 H.sub.5                                                                        --H         --NHCOCH.sub.3                                                                         --H  --NO.sub.2                             10   --C.sub.2 H.sub.5                                                                        --CH.sub.2 Ph                                                                              --OC.sub.2 H.sub.5                                                                     --H  --Cl                                   11   --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --C.sub.2 H.sub.4 OCOCH.sub.3                                                              --CONHCH.sub.3                                                                         --H  --Ph                                   12   --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OCOPh                                                                    --SO.sub.2 NHC.sub.3 H.sub.7                                                           --H  'CH═CH.sub.2                       __________________________________________________________________________     No.                                                                               hue               coloring density                                                                       light fastness                                    __________________________________________________________________________     1  red               1.93    Δ                                           2  red               1.84    ◯                                     3  red               1.76    Δ                                           4  red               1.81    Δ                                           5  red               1.74    ◯                                     6  red               1.80    ◯                                     7  red               1.72    ◯                                     8  red               1.75    Δ                                           9  red               1.71    Δ                                           10 red               1.80    Δ                                           11 red               1.80    ◯                                     12 red               1.72    ◯                                     __________________________________________________________________________     13-2-c K: --N═N--)                                                         NO.  R.sub.1   R.sub.2     R.sub.3 R.sub.4                                                                             R.sub.5                                __________________________________________________________________________     1    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.5                                                                          --H     --H  --H                                    2    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OH                                                                       --CH.sub.3                                                                             --H  --C.sub.2 H.sub.5                      3    --C.sub.2 H.sub.5                                                                        --CH═CH.sub.2                                                                          --H     --CH3                                                                               --CH3                                  4    --C.sub.2 H.sub.5                                                                        --Ph        --Cl    --CH3                                                                               --OC.sub.2 H.sub.5                     5    --C.sub.2 H.sub.5                                                                        --CH═CHOCOCH.sub.3                                                                     --NHCOCH.sub.3                                                                         --CH.sub.3                                                                          --C.sub.2 H.sub.4 Ph                   6    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 COOCH.sub.3                                                              --OH    --CH3                                                                               --NHCOCH.sub.3                         7    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       --NHSO.sub.2 CH.sub.3                                                                  --H  --NHCOCH.sub.3                         8    --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OCOOPh                                                                   --NHCOCH.sub.3                                                                         --H  --CN                                   9    --C.sub.2 H.sub.5                                                                        --H         --NHCOCH.sub.3                                                                         --H  --NO.sub.2                             10   --C.sub.2 H.sub.5                                                                        --CH2Ph     --OC.sub.2 H.sub.5                                                                     --H  --Cl                                   11   --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --C.sub.2 H.sub.4 OCOCH.sub.3                                                              --CONHCH.sub.3                                                                         --H  --Ph                                   12   --C.sub.2 H.sub.5                                                                        --C.sub.2 H.sub.4 OCOPh                                                                    --SO2NHC.sub.3 H.sub.7                                                                 --H  --CH═CH.sub.2                      __________________________________________________________________________     NO.                                                                               hue               coloring density                                                                       light fastness                                    __________________________________________________________________________     1  red               1.93    Δ                                           2  red               1.85    ◯                                     3  red               1.80    Δ                                           4  red               1.70    Δ                                           5  red               1.77    ◯                                     6  red               1.80    ◯                                     7  red               1.70    ◯                                     8  red               1.76    Δ                                           9  red               1.74    Δ                                           10 red               1.80    Δ                                           11 red               1.80    ◯                                     12 red               1.72    ◯                                     __________________________________________________________________________

(14) Dyes having the following structure: ##STR56## wherein K stands for --N═N--; and Q' stands for a ring comprising carbon, hydrogen, nitrogen, oxygen and sulfur and examples thereof include the following rings: ##STR57## wherein R₄ stands for a hydrogen atom or a substituted or unsubstituted alkyl group, allyl group, aryl group, aralkyl group, heterocyclic group, alkoxyalkyl group, oxycarbonylalkyl group, carboxyalkyl group, carbamoyl group, sulfamoyl group or cycloalkyl group; and R₅ and R₆ stand for a hydrogen atom, a halogen atom, a cyano group, a nitro group or a substituted or unsubstituted amino group, formylamino group, sulfonylamino group, ureido group, alkyl group, allyl group, vinyl group, aryl group, aralkyl group, alkoxyalkyl group, aralkyloxyalkyl group, allyloxyalkyl group, aryloxyalkyl group, carbamoyl group, sulfamoyl group, oxycarbonyl group, carboxy group, alkoxycarbonylalkyl group, carboxyalkyl group, heterocyclic group, alkoxycarboxyalkyl group, thioalkyl group, mercapto group or cycloalkyl group.

                  TABLE 14                                                         ______________________________________                                         (common to all the compounds 14)                                               ______________________________________                                         No.  R.sub.1     R.sub.2 R.sub.3  R.sub.4                                                                               R.sub.5                               ______________________________________                                         1    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                            nC.sub.4 H.sub.9                                                                      H                                     2    C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                        NHSO.sub.2 CH.sub.3                                                                     nC.sub.4 H.sub.9                                                                      H                                     3    C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                        NHCOC.sub.2 H.sub.5                                                                     nC.sub.4 H.sub.9                                                                      H                                     4    C.sub.2 H.sub.4 OCH.sub.2 Ph                                                               C.sub.2 H.sub.5                                                                        CH.sub.3 nC.sub.4 H.sub.9                                                                      H                                     5    C.sub.2 H.sub.4 CN                                                                         C.sub.2 H.sub.5                                                                        CH.sub.3 nC.sub.4 H.sub.9                                                                      H                                     ______________________________________                                          ##STR58##                                                                      ##STR59##                                                                      ##STR60##                                                                     No.   hue         coloring density                                                                              light fastness                                ______________________________________                                         14-1-a K: NN                                                                   1     purplish red                                                                               1.76           ◯                                 2     purplish red                                                                               1.70           Δ                                       3     purplish red                                                                               1.79           ◯                                 4     purplish red                                                                               1.67           ◯                                 5     purplish red                                                                               1.72           Δ                                       14-1-b K: NN                                                                   1     purplish red                                                                               1.78           ◯                                 2     purplish red                                                                               1.70           Δ                                       3     purplish red                                                                               1.81           ◯                                 4     purplish red                                                                               1.65           ◯                                 5     purplish red                                                                               1.73           Δ                                       14-1-c K: NN                                                                   1     purplish red                                                                               1.80           ◯                                 2     purplish red                                                                               1.75           ◯                                 3     purplish red                                                                               1.82           ◯                                 4     purplish red                                                                               1.69           ◯                                 5     purplish red                                                                               1.75           ◯                                 ______________________________________                                          ##STR61##                                                                      ##STR62##                                                                      ##STR63##                                                                     where in all the compounds a to c, R.sub.6 is H.                               ______________________________________                                         14-2-a K: NN                                                                   1     purplish red                                                                               1.92           ◯                                 2     purplish red                                                                               1.85           ◯                                 3     purplish red                                                                               1.96           ◯                                 4     purplish red                                                                               1.89           ◯                                 5     purplish red                                                                               1.80           Δ                                       14-2-b K: NN                                                                   1     purplish red                                                                               1.74           ◯                                 2     purplish red                                                                               1.72           Δ                                       3     purplish red                                                                               1.83           ◯                                 4     purplish red                                                                               1.69           Δ                                       5     purplish red                                                                               1.72           Δ                                       14-2-c K: NN                                                                   1     purplish red                                                                               1.79           ◯                                 2     purplish red                                                                               1.84           ◯                                 3     purplish red                                                                               1.89           ◯                                 4     purplish red                                                                               1.73           ◯                                 5     purplish red                                                                               1.75           ◯                                 ______________________________________                                    

(15) Dyes represented by the following structural formulae: ##STR64## (intermediate: a residue of intermediate A or B) wherein R₄ to R₆ will be defined below. ##STR65## Definition of R₄, R₅ and R₆ :

A hydrogen atom, a halogen atom, a cyano group, a nitro group or a substituted or unsubstituted alkyl group, allyl group, aryl group, aralkyl group, alkoxyalkyl group, aralkyloxyalkyl group, thioalkyl group, allyloxyalkyl group, aryloxyalkyl group, carbamoyl group, sulfamoyl group, oxycarbonyl group, amino group, formylamino group, sulfonylamino group, alkoxycarbonylalkyl group, heterocyclic group, cycloalkyl group, alkylthio group, alkylsulfinyl group or alkylsulfonyl group.

Definition of R₇ :

A hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group, allyl group, aryl group, aralkyl group, alkoxyalkyl group, aralkyloxyalkyl group, aryloxyalkyl group, heterocyclic group or cycloalkyl group.

Definition of R₈ :

A hydrogen atom, a halogen atom, a cyano group, a nitro group or a substituted or unsubstituted alkylcarbonyl group, amino group, arylcarbonyl group, aralkylcarbonyl group, oxycarbonyl group, heterocyclic carbonyl group, aryl group or allyl group or a substituted or unsubstituted alkyl group, allyl group, carbamoyl group, formylamino group, sulfonylamino group, sulfamoyl group or cycloalkyl group.

Specific examples of the dye represented by the general formula 15 and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 15.

                                      TABLE 15                                     __________________________________________________________________________     (15-1-a)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.6                                    __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                                                               --H                                        5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                                                               --CH.sub.3                                 6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.3 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                                                                  --CH.sub.3                                 9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                                                               --H                                        10 --C.sub.2 H.sub.5                                                                      --CH2Ph   --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                                                               --H                                        11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --CH.sub.3                                 12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO.sub.2 NHC.sub.3 H7                                                               --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        __________________________________________________________________________     NO.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.95    Δ                                                2  red          1.92    ◯                                          3  red          1.93    Δ                                                4  red          1.87    Δ                                                5  red          1.88    Δ                                                6  red          1.90    ◯                                          7  red          1.81    ◯                                          8  red          1.80    ◯                                          9  red          1.81    ◯                                          10 red          1.84    Δ                                                11 red          1.89    ◯                                          12 red          1.83    ◯                                          __________________________________________________________________________     (15-1-b)                                                                       NO.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.6                                    __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        2  --C.sub.2 H.sub.5                                                                      'C.sub.2 H.sub.4 OH                                                                      --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                                                               --H                                        5  --C.sub.2 H.sub.5                                                                      --CH═CHOCCCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                                                               --CH.sub.3                                 6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO2CH.sub.3                                                                       --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                                                                  --CH.sub.3                                 9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                                                               --H                                        10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                                                               --H                                        11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --CH.sub.3                                 12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO2NHC.sub.3 H.sub.7                                                                --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        __________________________________________________________________________     NO.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          2.05    Δ                                                2  red          2.04    ◯                                          3  red          2.10    Δ                                                4  red          1.97    ◯                                          5  red          1.99    ◯                                          7  red          2.00    ◯                                          8  red          1.95    ◯                                          9  red          1.97    ◯                                          10 red          1.97    Δ                                                11 red          2.01    ◯                                          12 red          1.93    ◯                                          __________________________________________________________________________     (15-1-c)                                                                       NO.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.6                                    __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                                                               --H                                        5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                                                               --CH.sub.3                                 6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.3 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                                                                  --CH.sub.3                                 9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                                                               --H                                        10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                                                               --H                                        11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --CH.sub.3                                 12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        __________________________________________________________________________     NO.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.94    Δ                                                2  red          1.90    ◯                                          3  red          1.94    Δ                                                4  red          1.88    Δ                                                5  red          1.86    ◯                                          6  red          1.71    ◯                                          7  red          1.82    ◯                                          8  red          1.84    ◯                                          9  red          1.83    ◯                                          10 red          1.85    ◯                                          11 red          1.90    Δ                                                12 red          1.81    ◯                                          __________________________________________________________________________     (15-2-a)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                        __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                           5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                           6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                           10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                           11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO2NHC.sub.3 H.sub.7                                                                --CH.sub.3                                                                         --C.sub.4 H.sub.9                              __________________________________________________________________________     No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.93    Δ                                                2  red          1.91    ◯                                          3  red          1.89    Δ                                                4  red          1.85    Δ                                                5  red          1.87    ◯                                          6  red          1.92    ◯                                          7  red          1.83    ◯                                          8  r6d          1.77    ◯                                          9  red          1.78    ◯                                          10 red          1.85    Δ                                                11 red          1.90    ◯                                          12 red          1.85    ◯                                          __________________________________________________________________________     (15-2-b)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                        __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                           5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                           6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                           10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                           11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO2NHC.sub.3 H.sub.7                                                                --CH.sub.3                                                                         --C.sub.4 H.sub.9                              __________________________________________________________________________     NO.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          2.07    Δ                                                3  red          2.12    Δ                                                4  red          2.00    ◯                                          5  red          1.98    ◯                                          6  red          1.99    ◯                                          7  red          2.03    Δ                                                8  red          1.97    ◯                                          9  red          2.01    ◯                                          10 red          2.04    Δ                                                11 red          1.98    ◯                                          12 red          1.95    ◯                                          __________________________________________________________________________     (15-2-c)                                                                       NO.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                        __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                           5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                           6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                           10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                           11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO2NHC.sub.3 H.sub.7                                                                #H3 --C.sub.4 H.sub.9                              __________________________________________________________________________     NO.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.96    Δ                                                2  red          1.88    ◯                                          3  red          1.91    Δ                                                4  red          1.90    Δ                                                5  red          1.83    ◯                                          6  red          1.88    ◯                                          7  red          1.85    ◯                                          8  red          1.87    ◯                                          9  red          1.80    ◯                                          10 red          1.82    Δ                                                11 red          1.95    ◯                                          12 red          1.83    Δ                                                __________________________________________________________________________                                     coloring                                                                           light                                      No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               hue density                                                                            fastness                                   __________________________________________________________________________     (15-3-a)                                                                       1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    red 1.95                                                                               Δ                                    2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            red 1.89                                                                               ◯                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    red 1.87                                                                               Δ                                    4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   red 1.90                                                                               ◯                              5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        red 1.91                                                                               ◯                              6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   red 1.89                                                                               ◯                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 red 1.79                                                                               ◯                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        red 1.83                                                                               ◯                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        red 1.84                                                                               ◯                              10 --C.sub.2 H.sub.5                                                                      --CH2Ph   --OC.sub.2 H.sub.5                                                                    red 1.82                                                                               Δ                                    11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        red 1.90                                                                               ◯                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO.sub.2 NHC.sub.3 H.sub.7                                                          red 1.83                                                                               ◯                              (15-3-b)                                                                       1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    red 2.07                                                                               Δ                                    2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            red 2.01                                                                               ◯                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    red 2.13                                                                               Δ                                    4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   red 1.94                                                                               Δ                                    5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        red 1.97                                                                               ◯                              6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   red 1.99                                                                               Δ                                    7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 red 2.05                                                                               ◯                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        red 1.97                                                                               ◯                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        red 2.00                                                                               ◯                              10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    red 1.96                                                                               Δ                                    11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        red 2.05                                                                               ◯                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO2NHC.sub.3 H.sub.7                                                                red 1.97                                                                               Δ                                    (15-3-c)                                                                       1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    red 1.95                                                                               Δ                                    2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 0H                                                                     --CH.sub.3                                                                            red 1.92                                                                               ◯                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    red 1.91                                                                               Δ                                    4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   red 1.90                                                                               ◯                              5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        red 1.91                                                                               ◯                              6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   red 1.88                                                                               ◯                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 red 1.85                                                                               ◯                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        red 1.81                                                                               ◯                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        red 1.86                                                                               ◯                              10 --C.sub.2 H.sub.5                                                                      --CH2Ph   --OC.sub.2 H.sub.5                                                                    red 1.85                                                                               Δ                                    11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        red 1.92                                                                               ◯                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO2NHC.sub.3 H.sub.7                                                                red 1.83                                                                               ◯                              __________________________________________________________________________     (15-4-a)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                        __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                           5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                           6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                           10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                           11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO2NHC.sub.3 H.sub.7                                                                --CH.sub.3                                                                         --C.sub.4 H.sub.9                              __________________________________________________________________________     NO.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.90    ◯                                          2  red          1.93    ◯                                          3  red          1.91    Δ                                                4  red          1.88    Δ                                                5  red          1.86    ◯                                          6  red          1.89    ◯                                          7  red          1.83    ◯                                          8  red          1.78    ◯                                          9  red          1.84    ◯                                          10 red          1.85    Δ                                                11 red          1.90    ◯                                          12 red          1.83    ◯                                          __________________________________________________________________________     (15-4-b)                                                                       NO.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                        __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                           5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                           6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                           10 --C.sub.2 H.sub.5                                                                      --CH2Ph   --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                           11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO2NHC.sub.3 H.sub.7                                                                --CH.sub.3                                                                         --C.sub.4 H.sub.9                              __________________________________________________________________________     No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          2.01    Δ                                                2  red          2.05    ◯                                          3  red          2.18    ◯                                          4  red          2.04    Δ                                                5  red          2.00    ◯                                          6  red          1.97    ◯                                          7  red          1.98    ◯                                          8  red          1.97    ◯                                          9  red          1.98    ◯                                          10 red          2.00    Δ                                                11 red          2.03    ◯                                          12 red          1.95    ◯                                          __________________________________________________________________________     (15-4-c)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                        __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                           5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                           6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                           10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                           11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                              __________________________________________________________________________     No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.95    Δ                                                2  red          1.93    ◯                                          3  red          1.91    Δ                                                4  red          1.90    Δ                                                5  red          1.82    ◯                                          6  red          1.90    ◯                                          7  red          1.83    Δ                                                8  red          1.86    ◯                                          9  red          1.84    ◯                                          10 red          1.87    Δ                                                11 red          1.91    ◯                                          12 red          1.84    ◯                                          __________________________________________________________________________     (15-5-a)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.6                                    __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                                                               --H                                        5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                                                               --H                                        6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                                                               --H                                        10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                                                               --H                                        11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        __________________________________________________________________________     No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.97    Δ                                                2  red          1.94    ◯                                          3  red          1.89    Δ                                                4  red          1.90    Δ                                                5  red          1.91    ◯                                          6  red          1.87    ◯                                          7  red          1.85    ◯                                          8  red          1.76    ◯                                          9  red          1.82    ◯                                          10 red          1.81    Δ                                                11 red          1.93    Δ                                                12 red          1.79    Δ                                                __________________________________________________________________________     (15-5-b)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.6                                    __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                                                               --H                                        5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                                                               --H                                        6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                                                               --H                                        10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                                                               --H                                        11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        __________________________________________________________________________     (15-5-c)                                                                       No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          2.01    Δ                                                2  red          1.97    ◯                                          3  red          2.06    Δ                                                4  red          1.94    Δ                                                5  red          2.00    ◯                                          6  red          2.01    Δ                                                7  red          1.95    ◯                                          8  red          1.91    ◯                                          9  red          1.92    ◯                                          10 red          2.00    Δ                                                11 red          1.95    ◯                                          12 red          1.89    ◯                                          __________________________________________________________________________     No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.6                                    __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                                                               --H                                        5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                                                               --H                                        6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                                                               --H                                        10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                                                               --H                                        11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        __________________________________________________________________________     No.                                                                               hue          Coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.91    Δ                                                2  red          1.87    ◯                                          3  red          1.96    ◯                                          4  red          1.90    Δ                                                5  red          1.89    ◯                                          6  red          1.87    Δ                                                7  red          1.84    ◯                                          8  red          1.79    ◯                                          9  red          1.85    ◯                                          10 red          1.90    Δ                                                11 red          1.91    ◯                                          12 red          1.79    ◯                                          __________________________________________________________________________     (15-6-a)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                        __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                           5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                           6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                           10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                           11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOOCH.sub.3                                                           --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                              12 --C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 OCOPh                                                                    --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                              __________________________________________________________________________     No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.93    Δ                                                2  red          1.89    ◯                                          3  red          1.87    Δ                                                4  red          1.90    ◯                                          5  red          1.92    ◯                                          6  red          1.87    ◯                                          7  red          1.84    ◯                                          8  red          1.79    ◯                                          9  red          1.83    ◯                                          10 red          1.86    Δ                                                11 red          1.91    ◯                                          12 red          1.85    ◯                                          __________________________________________________________________________     (15-6-b)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                        __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                           5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                           6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                           10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                           11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOPh                                                                  --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                              __________________________________________________________________________     No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          2.07    Δ                                                2  red          2.01    ◯                                          3  red          2.14    Δ                                                4  red          2.03    Δ                                                5  red          2.00    ◯                                          6  red          1.97    ◯                                          7  red          1.98    Δ                                                8  red          2.00    ◯                                          9  red          2.01    ◯                                          10 red          2.04    Δ                                                11 red          1.98    ◯                                          12 red          1.95    ◯                                          __________________________________________________________________________     (15-6-a)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                        __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                              3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                              4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                           5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                           6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                              7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                              8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                              9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                           10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                           11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                              12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOPh                                                                  --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                              __________________________________________________________________________     (15-6-c)                                                                       No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.91    Δ                                                2  red          1.98    ◯                                          3  red          1.90    Δ                                                4  red          1.85    ◯                                          5  red          1.87    ◯                                          6  red          1.90    ◯                                          7  red          1.83    Δ                                                8  red          1.80    ◯                                          9  red          1.79    ◯                                          10 red          1.87    Δ                                                11 red          1.88    ◯                                          12 red          1.84    ◯                                          __________________________________________________________________________     (15-7-a)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.6                                    __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                                                               --H                                        5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                                                               --H                                        6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                                                               --H                                        10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                                                               --H                                        11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOPh                                                                  --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        __________________________________________________________________________     No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.97    Δ                                                2  red          1.90    ◯                                          3  red          1.89    Δ                                                4  red          1.82    Δ                                                5  red          1.91    ◯                                          6  red          1.86    ◯                                          7  red          1.84    ◯                                          8  red          1.81    ◯                                          9  red          1.77    ◯                                          10 red          1.85    Δ                                                11 red          1.90    Δ                                                12 red          1.87    ◯                                          __________________________________________________________________________     (15-7-b)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.6                                    __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                                                               --H                                        5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                                                               --H                                        6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.2 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                                                               --H                                        10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                                                               --H                                        11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOPh                                                                  --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        __________________________________________________________________________     No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          2.03    Δ                                                2  red          2.01    ◯                                          3  red          2.17    Δ                                                4  red          2.06    Δ                                                5  red          1.92    ◯                                          6  red          1.99    ◯                                          7  red          2.04    ◯                                          8  red          1.89    ◯                                          9  red          1.93    ◯                                          10 red          1.91    Δ                                                11 red          1.94    Δ                                                12 red          1.96    ◯                                          __________________________________________________________________________     (15-7-c)                                                                       No.                                                                               R.sub.1 R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.6                                    __________________________________________________________________________     1  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.5                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        2  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OH                                                                     --CH.sub.3                                                                            --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        3  --C.sub.2 H.sub.5                                                                      --CH═CH.sub.2                                                                        --H    --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        4  --C.sub.2 H.sub.5                                                                      --Ph      --Cl   --CN                                                                               --Ph                                                                               --H                                        5  --C.sub.2 H.sub.5                                                                      --CH═CHOCOCH.sub.3                                                                   --NHCOCH.sub.3                                                                        --CN                                                                               --Ph                                                                               --H                                        6  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 COOCH.sub.3                                                            --OH   --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        7  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                     --NHSO.sub.3 CH.sub.3                                                                 --NO.sub.2                                                                         --C.sub.4 H.sub.9                                                                  --H                                        8  --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOOPh                                                                 --NHCOCH.sub.3                                                                        --CN                                                                               --C.sub.4 H.sub.9                                                                  --H                                        9  --C.sub.2 H.sub.5                                                                      --H       --NHCOCH.sub.3                                                                        --NO.sub.2                                                                         --Ph                                                                               --H                                        10 --C.sub.2 H.sub.5                                                                      --CH.sub.2 Ph                                                                            --OC.sub.2 H.sub.5                                                                    --CN                                                                               --Ph                                                                               --H                                        11 --C.sub.2 H.sub.4 OCOCH.sub.3                                                          --C.sub.2 H.sub.4 OCOCH.sub.3                                                            --CONHCH.sub.3                                                                        --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        12 --C.sub.2 H.sub.5                                                                      --C.sub.2 H.sub.4 OCOPh                                                                  --SO.sub.2 NHC.sub.3 H.sub.7                                                          --CH.sub.3                                                                         --C.sub.4 H.sub.9                                                                  --H                                        __________________________________________________________________________     No.                                                                               hue          coloring density                                                                       light fastness                                         __________________________________________________________________________     1  red          1.97    Δ                                                2  red          1.90    ◯                                          3  red          1.89    Δ                                                4  red          1.82    Δ                                                5  red          1.91    ◯                                          6  red          1.86    ◯                                          7  red          1.84    ◯                                          8  red          1.81    ◯                                          9  red          1.77    ◯                                          10 red          1.85    Δ                                                11 red          1.90    Δ                                                12 red          1.87    ◯                                          __________________________________________________________________________

(16) Dyes represented by the following structural formula: ##STR66## wherein K stands for ═CH--, ═C(CN)-- or ═N-- and R₄ and R₇ will be defined below.

Specific examples of the dye represented by the general formula 16 and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 16.

                                      TABLE 16                                     __________________________________________________________________________      ##STR67##                                                                      ##STR68##                                                                      ##STR69##                                                                     No.                                                                               R.sub.1 R.sub.2   R.sub.3 R.sub.4                                                                            R.sub.7                                                                               hue coloring density                                                                       light                      __________________________________________________________________________                                                         fastness                   (16-a K: N)                                                                    1  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                          H       CN  Ph     orange                                                                             1.83    Δ                    2  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                               CN  Ph     orange                                                                             1.81    ◯              3  C.sub.2 H.sub.5                                                                        CHCH.sub.2                                                                               H       CN  2-benzthiazolyl                                                                       orange                                                                             1.84    Δ                    4  C.sub.2 H.sub.5                                                                        Ph        Cl      CN  2-benzthiazolyl                                                                       orange                                                                             1.75    Δ                    5  C.sub.2 H.sub.5                                                                        CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                           C.sub.2 H.sub.5                                                                    2-benzthiazolyl                                                                       orange                                                                             1.72    ◯              6  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 COOCH.sub.3                                                              OH      NO.sub.2                                                                           2-benzthiazolyl                                                                       orange                                                                             1.74    ◯              7  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.72    ◯              8  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                           CN  2-thienyl                                                                             orange                                                                             1.70    ◯              9  C.sub.2 H.sub.5                                                                        H         NHCOCH.sub.3                                                                           NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.79    ◯              10 C.sub.2 H.sub.5                                                                        CH.sub.2 Ph                                                                              OC.sub.2 H.sub.5                                                                       CN  Ph     orange                                                                             1.82    Δ                    11 C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                              CONHCH.sub.3                                                                           CH.sub.3                                                                           Ph     orange                                                                             1.73    ◯              12 C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOph                                                                    SO.sub.2 NHC.sub.3 H.sub.7                                                             CH.sub.3                                                                           Ph     orange                                                                             1.76    ◯              (16-a K: CH)                                                                   1  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                          H       CN  Ph     orange                                                                             1.82    Δ                    2  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                               CN  Ph     orange                                                                             1.81    ◯              3  C.sub.2 H.sub.5                                                                        CHCH.sub.2                                                                               H       CN  2-benzthiazolyl                                                                       orange                                                                             1.79    Δ                    4  C.sub.2 H.sub.5                                                                        Ph        Cl      CN  2-benzthiazolyl                                                                       orange                                                                             1.76    Δ                    5  C.sub.2 H.sub.5                                                                        CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                           C.sub.2 H.sub.5                                                                    2-benzthiazolyl                                                                       orange                                                                             1.71    ◯              6  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 COOCH.sub.3                                                              OH      NO.sub.2                                                                           2-benzthiazolyl                                                                       orange                                                                             1.76    ◯              7  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.69    ◯              8  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                           CN  2-thienyl                                                                             orange                                                                             1.73    ◯              9  C.sub.2 H.sub.5                                                                        H         NHCOCH.sub.3                                                                           NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.82    ◯              10 C.sub.2 H.sub.5                                                                        CH.sub.2 Ph                                                                              OC.sub.2 H.sub.5                                                                       CN  Ph     orange                                                                             1.85    Δ                    11 C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                              CONHCH.sub.3                                                                           CH.sub.3                                                                           Ph     orange                                                                             1.75    ◯              12 C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOPh                                                                    SO.sub.2 NHC.sub.3 H.sub.7                                                             CH.sub.3                                                                           Ph     orange                                                                             1.77    ◯              (16-b K: N)                                                                    1  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                          H       CN  Ph     orange                                                                             1.79    Δ                    2  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                               CN  Ph     orange                                                                             1.83    ◯              3  C.sub.2 H.sub.5                                                                        CHCH.sub.2                                                                               H       CN  2-benzthiazolyl                                                                       orange                                                                             1.86    Δ                    4  C.sub.2 H.sub.5                                                                        Ph        Cl      CN  2-benzthiazolyl                                                                       orange                                                                             1.77    Δ                    5  C.sub.2 H.sub.5                                                                        CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                           C.sub.2 H.sub.5                                                                    2-benzthiazolyl                                                                       orange                                                                             1.74    ◯              6  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 COOCH.sub.3                                                              OH      NO.sub.2                                                                           2-benzthiazolyl                                                                       orange                                                                             1.76    ◯              7  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.74    ◯              8  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                           CN  2-thienyl                                                                             orange                                                                             1.75    ◯              9  C.sub.2 H.sub.5                                                                        H         NHCOCH.sub.3                                                                           NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.73    ◯              10 C.sub.2 H.sub.5                                                                        CH.sub.2 Ph                                                                              OC.sub.2 H.sub.5                                                                       CN  Ph     orange                                                                             1.84    Δ                    11 C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                              CONHCH.sub.3                                                                           CH.sub.3                                                                           Ph     orange                                                                             1.75    ◯              12 C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOPh                                                                    SO.sub.2 NHC.sub.3 H.sub.7                                                             CH.sub.3                                                                           Ph     orange                                                                             1.75    ◯              (16-b K: CH)                                                                   1  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                          H       CN  Ph     orange                                                                             1.79    Δ                    2  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                               CN  Ph     orange                                                                             1.85    ◯              3  C.sub.2 H.sub.5                                                                        CHCH.sub.2                                                                               H       CN  2-benzthiazolyl                                                                       orange                                                                             1.82    Δ                    4  C.sub.2 H.sub.5                                                                        Ph        Cl      CN  2-benzthiazolyl                                                                       orange                                                                             1.76    Δ                    5  C.sub.2 H.sub.5                                                                        CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                           C.sub.2 H.sub.5                                                                    2-benzthiazolyl                                                                       orange                                                                             1.74    ◯              6  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 COOCH.sub.3                                                              OH      NO.sub.2                                                                           2-benzthiazolyl                                                                       orange                                                                             1.78    ◯              7  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.71    ◯              8  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                           CN  2-thienyl                                                                             orange                                                                             1.73    ◯              9  C.sub.2 H.sub.5                                                                        H         NHCOCH.sub.3                                                                           NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.74    ◯              10 C.sub.2 H.sub.5                                                                        CH.sub.2 Ph                                                                              OC.sub.2 H.sub.5                                                                       CN  Ph     orange                                                                             1.81    Δ                    11 C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                              CONHCH.sub.3                                                                           CH.sub.3                                                                           Ph     orange                                                                             1.77    ◯              12 C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOPh                                                                    SO.sub.2 NHC.sub.3 H.sub.7                                                             CH.sub.3                                                                           Ph     orange                                                                             1.72    ◯              (16-c K: N)                                                                    1  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                          H       CN  Ph     orange                                                                             1.78    Δ                    2  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                               CN  Ph     orange                                                                             1.85    ◯              3  C.sub.2 H.sub.5                                                                        CHCH.sub.2                                                                               H       CN  2-benzthiazolyl                                                                       orange                                                                             1.81    Δ                    4  C.sub.2 H.sub.5                                                                        Ph        Cl      CN  2-benzthiazolyl                                                                       orange                                                                             1.78    Δ                    5  C.sub.2 H.sub.5                                                                        CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                           C.sub.2 H.sub.5                                                                    2-benzthiazolyl                                                                       orange                                                                             1.73    ◯              6  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 COOCH.sub.3                                                              OH      NO.sub.2                                                                           2-benzthiazolyl                                                                       orange                                                                             1.69    ◯              7  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.74    ◯              8  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                           CN  2-thienyl                                                                             orange                                                                             1.74    ◯              9  C.sub.2 H.sub.5                                                                        H         NHCOCH.sub.3                                                                           NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.75    ◯              10 C.sub.2 H.sub.5                                                                        CH.sub.2 Ph                                                                              OC.sub.2 H.sub.5                                                                       CN  Ph     orange                                                                             1.79    Δ                    11 C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                              CONHCH.sub.3                                                                           CH.sub.3                                                                           Ph     orange                                                                             1.75    ◯              12 C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOPh                                                                    SO.sub.2 NHC.sub.3 H.sub.7                                                             CH.sub.3                                                                           Ph     orange                                                                             1.80    ◯              (16-c K: CH)                                                                   1  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                          H       CN  Ph     orange                                                                             1.79    Δ                    2  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                               CN  Ph     orange                                                                             1.80    ◯              3  C.sub.2 H.sub.5                                                                        CHCH.sub.2                                                                               H       CN  2-benzthiazolyl                                                                       orange                                                                             1.79    Δ                    4  C.sub.2 H.sub.5                                                                        Ph        Cl      CN  2-benzthiazolyl                                                                       orange                                                                             1.77    Δ                    5  C.sub.2 H.sub.5                                                                        CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                           C.sub.2 H.sub.5                                                                    2-benzthiazolyl                                                                       orange                                                                             1.69    ◯              6  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 COOCH.sub.3                                                              OH      NO.sub.2                                                                           2-benzthiazolyl                                                                       orange                                                                             1.78    ◯              7  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.74    ◯              8  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                           CN  2-thienyl                                                                             orange                                                                             1.74    ◯              9  C.sub.2 H.sub.5                                                                        H         NHCOCH.sub.3                                                                           NO.sub.2                                                                           2-thienyl                                                                             orange                                                                             1.73    ◯              10 C.sub.2 H.sub.5                                                                        CH.sub.2 Ph                                                                              OC.sub.2 H.sub.5                                                                       CN  Ph     orange                                                                             1.79    Δ                    11 C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                              CONHCH.sub.3                                                                           CH.sub.3                                                                           Ph     orange                                                                             1.77    ◯              12 C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOPh                                                                    SO.sub.2 NHC.sub.3 H.sub.7                                                             CH.sub.3                                                                           Ph     orange                                                                             1.80    ◯              (16-a K: C(CN))                                                                1  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                          H       CN  Ph     red 1.91    Δ                    2  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                               CN  Ph     red 1.92    ◯              3  C.sub.2 H.sub.5                                                                        CHCH.sub.2                                                                               H       CN  2-benzthiazolyl                                                                       red 1.87    Δ                    4  C.sub.2 H.sub.5                                                                        Ph        Cl      CN  2-benzthiazolyl                                                                       red 1.86    Δ                    5  C.sub.2 H.sub.5                                                                        CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                           C.sub.2 H.sub.5                                                                    2-benzthiazolyl                                                                       red 1.82    ◯              5  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 COOCH.sub.3                                                              OH      NO.sub.2                                                                           2-benzthiazolyi                                                                       red 1.93    ◯              7  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                           2-thienyl                                                                             red 1.84    ◯              8  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                           CN  2-thienyl                                                                             red 1.86    ◯              9  C.sub.2 H.sub.5                                                                        H         NHCOCH.sub.3                                                                           NO.sub.2                                                                           2-thienyl                                                                             red 1.84    ◯              10 C.sub.2 H.sub.5                                                                        CH.sub.2 Ph                                                                              OC.sub.2 H.sub.5                                                                       CN  Ph     red 1.85    Δ                    11 C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                              CONHCH.sub.3                                                                           CH.sub.3                                                                           Ph     red 1.91    ◯              12 C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOPh                                                                    SO.sub.2 NHC.sub.3 H.sub.7                                                             CH.sub.3                                                                           Ph     red 1.86    ◯              (16-b K: C(CN))                                                                1  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                          H       CN  Ph     red 1.99    Δ                    2  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                               CN  Ph     red 2.03    ◯              3  C.sub.2 H.sub.5                                                                        CHCH.sub.2                                                                               H       CN  2-benzthiazolyl                                                                       red 2.00    Δ                    4  C.sub.2 H.sub.5                                                                        Ph        Cl      C.sub.2 H.sub.5                                                                    2-benzthiazolyl                                                                       red 1.96    Δ                    5  C.sub.2 H.sub.5                                                                        CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                           CN  2-benzthiazolyl                                                                       red 1.92    ◯              6  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 COOCH.sub.3                                                              OH      NO.sub.2                                                                           2-benzthiazolyl                                                                       red 2.07    ◯              7  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                           2-thienyl                                                                             red 1.93    ◯              8  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                           CN  2-thienyl                                                                             red 1.91    ◯              9  C.sub.2 H.sub.5                                                                        H         NHCOCH.sub.3                                                                           NO.sub.2                                                                           2-thienyl                                                                             red 1.89    ◯              10 C.sub.2 H.sub.5                                                                        CH.sub.2 Ph                                                                              OC.sub.2 H.sub.5                                                                       CN  Ph     red 1.94    Δ                    11 C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                              CONHCH.sub.3                                                                           CH.sub.3                                                                           Ph     red 2.04    ◯              12 C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOPh                                                                    SO.sub.2 NHC.sub.3 H.sub.7                                                             CH.sub.3                                                                           Ph     red 1.97    ◯              (16-c K: C(CN))                                                                1  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.5                                                                          H       CN  Ph     red 1.89    Δ                    2  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                               CN  Ph     red 1.94    ◯              3  C.sub.2 H.sub.5                                                                        CHCH.sub.2                                                                               H       CN  2-benzthiazolyl                                                                       red 1.90    Δ                    4  C.sub.2 H.sub.5                                                                        Ph        Cl      CN  2-benzthiazolyl                                                                       red 1.92    Δ                    5  C.sub.2 H.sub.5                                                                        CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                           C.sub.2 H.sub.5                                                                    2-benzthiazolyl                                                                       red 1.88    ◯              6  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 COOCH.sub.3                                                              OH      NO.sub.2                                                                           2-benzthiazolyl                                                                       red 1.96    ◯              7  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                    NO.sub.2                                                                           2-thienyl                                                                             red 1.87    ◯              8  C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                           CN  2-thienyl                                                                             red 1.84    ◯              9  C.sub.2 H.sub.5                                                                        H         NHCOCH.sub.3                                                                           NO.sub.2                                                                           2-thienyl                                                                             red 1.86    ◯              10 C.sub.2 H.sub.5                                                                        CH.sub.2 Ph                                                                              OC.sub.2 H.sub.5                                                                       CN  Ph     red 1.87    Δ                    11 C.sub.2 H.sub.4 OCOCH.sub.3                                                            C.sub.2 H.sub.4 OCOCH.sub.3                                                              CONHCH.sub.3                                                                           CH.sub.3                                                                           Ph     red 1.93    ◯              12 C.sub.2 H.sub.5                                                                        C.sub.2 H.sub.4 OCOPh                                                                    SO.sub.2 NHC.sub.3 H.sub.7                                                             CH.sub.3                                                                           Ph     red 1.84    ◯              __________________________________________________________________________

(17) Dyes represented by the following structural 20 formula: ##STR70## wherein K stands for ═CH--, ═C(CN)-- or ═N--, Z stands for ═O or ═C(CN)(R₈), Q' stands for a ring comprising carbon, hydrogen, nitrogen, oxygen and sulfur, m is an integer of 0 to 2. Examples of the ring include the following. ##STR71## wherein R₅ 's may be the same or different, R₅ and R₈ will be defined below and p is an integer of 0 to 4.

Specific examples of the dye represented by the general formula 17 and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 17.

                                      TABLE 17                                     __________________________________________________________________________      ##STR72##                                                                      ##STR73##                                                                      ##STR74##                                                                      ##STR75##                                                                      ##STR76##                                                                      ##STR77##                                                                      ##STR78##                                                                      ##STR79##                                                                      ##STR80##                                                                      ##STR81##                                                                      ##STR82##                                                                      ##STR83##                                                                      ##STR84##                                                                      ##STR85##                                                                      ##STR86##                                                                      ##STR87##                                                                      ##STR88##                                                                      ##STR89##                                                                     No.                                                                               R.sub.1                                                                            R.sub.2   R.sub.3                                                                               R.sub.5  R.sub.8                                                                            hue   coloring density                                                                       light                       __________________________________________________________________________                                                        fastness                    (17-1-a)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H            purplish red                                                                         1.92    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3   purplish red                                                                         1.94    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh        purplish red                                                                         1.87    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                         purplish red                                                                         1.90    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh      purplish red                                                                         1.88    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                      purplish red                                                                         1.87    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                             purplish red                                                                         1.85    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                               purplish red                                                                         1.90    ◯               (17-1-b)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H            purplish red                                                                         1.94    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3   purplish red                                                                         1.95    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh        purplish red                                                                         1.90    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                         purplish red                                                                         1.92    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh      purplish red                                                                         1.87    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                      purplish red                                                                         1.90    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                             purplish red                                                                         1.86    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                               purplish red                                                                         1.90    ◯               (17-1-c)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H            purplish red                                                                         1.91    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3   purplish red                                                                         1.95    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh        purplish red                                                                         1.86    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                         purplish red                                                                         1.92    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh      purplish red                                                                         1.91    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                      purplish red                                                                         1.86    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                             purplish red                                                                         1.84    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                               purplish red                                                                         1.90    ◯               (17-2-a)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H            purplish red                                                                         1.88    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3   purplish red                                                                         1.90    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh        purplish red                                                                         1.91    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                         purplish red                                                                         1.92    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh      purplish red                                                                         1.86    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                      purplish red                                                                         1.84    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                             purplish red                                                                         1.91    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                               purplish red                                                                         1.90    ◯               (17-2-b)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H            purplish red                                                                         1.94    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3   purplish red                                                                         1.91    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh        purplish red                                                                         1.90    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                         purplish red                                                                         1.87    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh      purplish red                                                                         1.86    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                      purplish red                                                                         1.85    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                             purplish red                                                                         1.88    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                               purplish red                                                                         1.90    ◯               (17-2-c)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H            purplish red                                                                         1.90    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3   purplish red                                                                         1.92    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh        purplish red                                                                         1.91    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                         purplish red                                                                         1.89    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh      purplish red                                                                         1.91    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                      purplish red                                                                         1.86    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                             purplish red                                                                         1.87    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                               purplish red                                                                         1.90    ◯               (17-3-a)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   blue  1.94    ◯               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3                                                                              H   blue  1.96    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh    CN  blue  1.90    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     H        CN  blue  1.92    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-C.sub.2 H.sub.5 3-Cl                                                                  CN  blue  1.91    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-COOCH.sub.3                                                                           CN  blue  1.88    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-C.sub.2 H.sub.4 Ph                                                                    CN  blue  1.86    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-Ph     CN  blue  1.90    ◯               (17-3-b)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   blue  1.92    ◯               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H        H   blue  1.95    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      CN       CN  blue  1.91    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CN       CN  blue  1.93    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          CN       CN  blue  1.90    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     CN       CN  blue  1.87    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   CN       CN  blue  1.92    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          CN       CN  blue  1.90    ◯               (17-3-c)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   blue  1.93    ◯               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H        H   blue  1.96    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      CN       CN  blue  1.92    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CN       CN  blue  1.94    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          CN       CN  blue  1.92    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     CN       CN  blue  1.85    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   CN       CN  blue  1.91    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          CN       CN  blue  1.90    ◯               (17-4-a)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   blue  2.12    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H        H   blue  2.14    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      CN       CN  blue  2.07    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CN       CN  blue  2.11    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          CN       CN  blue  2.00    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     CN       CN  blue  1.98    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   CN       CN  blue  2.04    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          CN       CN  blue  1.92    Δ                     (17-4-b)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   blue  2.14    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H        H   blue  2.07    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      CN       CN  blue  2.03    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CN       CN  blue  2.11    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          CN       CN  blue  2.06    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     CN       CN  blue  1.97    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   CN       CN  blue  1.98    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          CN       CN  blue  1.94    Δ                     (17-4-c)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   blue  2.16    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H        H   blue  2.17    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      CN       CN  blue  2.03    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CN       CN  blue  2.07    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          CN       CN  blue  1.99    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     CN       CN  blue  2.02    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   CN       CN  blue  2.08    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          CN       CN  blue  2.01    Δ                     (17-5-a)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   red   2.04    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3                                                                              H   red   2.01    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh    CN  red   1.93    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                     CN  red   1.97    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh  CN  red   1.91    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                  CN  red   1.97    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                         CN  red   1.96    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                           CN  red   2.02    ◯               (17-5-b)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   red   2.05    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3                                                                              H   red   1.99    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh    CN  red   1.97    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                     CN  red   1.94    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh  CN  red   1.92    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                  CN  red   2.03    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                         CN  red   2.00    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                           CN  red   1.94    ◯               (17-5-c)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   red   2.06    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3                                                                              H   red   2.02    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh    CN  red   1.99    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                     CN  red   1.97    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh  CN  red   1.94    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                  CN  red   2.01    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                         CN  red   2.06    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                           CN  red   1.98    ◯               (17-6-a)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   red   2.04    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3                                                                              H   red   2.01    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh    CN  red   1.97    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                     CN  red   1.95    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh  CN  red   1.96    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                  CN  red   1.97    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                         CN  red   2.04    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                           CN  red   2.02    ◯               (17-6-b)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   red   2.06    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3                                                                              H   red   2.04    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh    CN  red   2.00    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                     CN  red   1.98    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh  CN  red   1.99    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                  CN  red   1.95    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                         CN  red   2.09    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                           CN  red   2.03    ◯               (17-6-c)                                                                       1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H        H   red   2.10    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              2-CH.sub.3                                                                              H   red   2.11    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      2-OPh    CN  red   2.07    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     2,3-C.sub.2 H.sub.5                                                                     CN  red   1.99    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-COOPh  CN  red   2.04    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-C.sub.2 H.sub.5 3-Cl                                                                  CN  red   2.02    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.9                                                       NHSO.sub.2 CH.sub.3                                                                   2-CN 4-CH.sub.3                                                                         CN  red   2.06    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          4-C.sub.2 H.sub.4 COOCH.sub.3                                                           CN  red   2.11    ◯               __________________________________________________________________________

(18) Dyes represented by the following formulae: ##STR90## wherein K stands for --N═N-- and m is an integer of 0 to 2.

                                      TABLE 18                                     __________________________________________________________________________      ##STR91##                                                                      ##STR92##                                                                      ##STR93##                                                                      ##STR94##                                                                      ##STR95##                                                                      ##STR96##                                                                     (18-1)                                                                         No.                                                                               R.sub.1  R.sub.2 R.sub.3 3-R.sub.4                                                                           4-R.sub.4                                     __________________________________________________________________________     1  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                           CH.sub.3                                                                            CN                                            2  C.sub.2 H.sub.4 OCOCH.sub.3                                                             C.sub.2 H.sub.5                                                                        NHSO.sub.2 CH.sub.3                                                                    CH.sub.3                                                                            CN                                            3  C.sub.2 H.sub.4 OCH.sub.3                                                               C.sub.2 H.sub.5                                                                        NHCOC.sub.2 H.sub.5                                                                    CH.sub.3                                                                            CN                                            4  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        CH.sub.3                                                                               CH.sub.3                                                                            CN                                            5  C.sub.2 H.sub.4 OCH.sub.3                                                               C.sub.2 H.sub.5                                                                        H       CH.sub.3                                                                            CN                                            6  C.sub.2 H.sub.4 OCH.sub.2 Ph                                                            C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                           CH.sub.3                                                                            CN                                            7  C.sub.2 H.sub.4 CN                                                                      C.sub.2 H.sub.5                                                                        CH.sub.3                                                                               C.sub.2 H.sub.5                                                                     CN                                            8  C.sub.2 H.sub.4 OCOCH.sub.3                                                             C.sub.2 H.sub.4 OCOCH.sub.3                                                            NHCOCH.sub.3                                                                           CH.sub.3                                                                            CN                                            9  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                           SC.sub.2 H.sub.5                                                                    CN                                            __________________________________________________________________________     No.   hue       coloring density                                                                        light fastness                                        __________________________________________________________________________     18-1-a K: NN                                                                   1     red       2.18     ◯                                         2     red       2.06     ◯                                         3     red       2.01     ◯                                         4     red       2.09     ◯                                         5     red       1.83     Δ                                               6     red       1.92     ◯                                         7     red       2.02     ◯                                         8     red       1.87     ◯                                         9     red       1.89     Δ                                               18-1-b K: NN                                                                   1     red       2.06     ◯                                         2     red       2.08     ◯                                         3     red       2.10     ◯                                         4     red       2.01     Δ                                               5     red       1.80     Δ                                               6     red       1.85     ◯                                         7     red       1.97     Δ                                               8     red       1.79     ◯                                         9     red       1.92     Δ                                               18-1-c K: NN                                                                   1     red       1.97     ◯                                         2     red       1.90     Δ                                               3     red       1.93     ◯                                         4     red       1.87     Δ                                               5     red       1.81     Δ                                               6     red       1.94     ◯                                         7     red       1.97     Δ                                               8     red       1.83     Δ                                               9     red       1.79     ◯                                         (18-2)                                                                         No.                                                                               R.sub.1  R.sub.2 R.sub.3 2-R.sub.4                                                                           4-R.sub.4                                     __________________________________________________________________________     1  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        NHCOCH.sub.3                                                                           SC.sub.2 H.sub.5                                                                    CN                                            2  C.sub.2 H.sub.4 OCOCH.sub.3                                                             C.sub.2 H.sub.5                                                                        NHSO.sub.2 CH.sub.3                                                                    SC.sub.2 H.sub.5                                                                    CN                                            3  C.sub.2 H.sub.4 OCH.sub.3                                                               C.sub.2 H.sub.5                                                                        NHCOC.sub.2 H.sub.5                                                                    SC.sub.2 H.sub.5                                                                    CN                                            4  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        H       SC.sub.2 H.sub.5                                                                    CN                                            5  C.sub.2 H.sub.4 OCH.sub.3                                                               C.sub.2 H.sub.4 OCH.sub.3                                                              NHCOCH.sub.3                                                                           SC.sub.2 H.sub.5                                                                    CN                                            6  C.sub.2 H.sub.4 CN                                                                      C.sub.2 H.sub.5                                                                        CH.sub.3                                                                               SC.sub.2 H.sub.5                                                                    CN                                            7  C.sub.2 H.sub.4 OCOCH.sub.3                                                             C.sub.2 H.sub.4 OCOCH.sub.3                                                            NHCOCH.sub.3                                                                           SC.sub.2 H.sub.5                                                                    CN                                            8  C.sub.2 H.sub.5                                                                         C.sub.2 H.sub.5                                                                        CH.sub.3                                                                               CH.sub.3                                                                            CN                                            9  C.sub.2 H.sub.4 OCOCH.sub.3                                                             C.sub.2 H.sub.5                                                                        CH.sub.3                                                                               CH.sub.3                                                                            CN                                            No.   hue       coloring density                                                                        light fastness                                        __________________________________________________________________________     18-2-a K: NN                                                                   1     red       1.97     ◯                                         2     red       1.83     ◯                                         3     red       1.91     ◯                                         4     red       2.13     ◯                                         5     red       1.89     ◯                                         6     red       1.84     ◯                                         7     red       1.77     ◯                                         8     red       2.19     Δ                                               9     red       2.11     Δ                                               18-2-b K: NN                                                                   1     red       1.98     ◯                                         2     red       1.85     ◯                                         3     red       1.91     ◯                                         4     red       2.10     ◯                                         5     red       1.86     ◯                                         6     red       1.81     ◯                                         7     red       1.74     ◯                                         8     red       2.11     Δ                                               9     red       2.07     Δ                                               18-2-c K: NN                                                                   1     red       1.92     ◯                                         2     red       1.80     ◯                                         3     red       1.87     ◯                                         4     red       2.09     Δ                                               5     red       1.83     ◯                                         6     red       1.78     Δ                                               7     red       1.79     ◯                                         8     red       2.10     Δ                                               9     red       1.93     Δ                                               __________________________________________________________________________

(19) Dyes represented by the following structure: ##STR97## wherein K stands for --N═N, Q' is absent or a ring comprising carbon, hydrogen, nitrogen, oxygen and sulfur and m is an integer of 0 to 3. Examples of the ring include the following. ##STR98## wherein R₄, R₅ and R₆ which may be the same or different will be defined later and p is an integer of 0 to 4.

Specific examples of the dye represented by the general formula 19 and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 19.

                                      TABLE 19                                     __________________________________________________________________________      ##STR99##                                                                      ##STR100##                                                                     ##STR101##                                                                     ##STR102##                                                                     ##STR103##                                                                     ##STR104##                                                                     ##STR105##                                                                     ##STR106##                                                                     ##STR107##                                                                    No.                                                                               R.sub.1                                                                            R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                             R.sub.6                                                                              hue coloring density                                                                       light                       __________________________________________________________________________                                                        fastness                    (19-1-a K: NN)                                                                 1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      CN  H    H     red 1.97    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 0H                                                                       CH.sub.3                                                                              CN  H    CH.sub.3                                                                             red 1.94    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      NO.sub.2                                                                           H    H     red 1.93    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CH.sub.3                                                                           H    OCOCH.sub.3                                                                          red 1.89    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          C.sub.4 H.sub.9                                                                    CH.sub.3                                                                            H     red 1.94    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     Ph  H    H     red 1.87    Δ                     7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOCH.sub.3                                                              NHSO.sub.2 CH.sub.3                                                                   Ph  C.sub.2 H.sub.5                                                                     Cl    red 1.84    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          Ph  Cl   CH.sub.3                                                                             red 1.86    ◯               (19-1-b K: NN)                                                                 1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      CN  H    H     red 1.94    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              CN  H    CH.sub.3                                                                             red 1.92    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      NO.sub.2                                                                           H    H     red 1.95    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CH.sub.3                                                                           H    COCH.sub.3                                                                           red 1.91    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          C.sub.4 H.sub.9                                                                    CH.sub.3                                                                            H     red 1.96    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     Ph  H    H     red 1.93    Δ                     7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOCH.sub.3                                                              NHSO.sub.2 CH.sub.3                                                                   Ph  C.sub.2 H.sub.5                                                                     Cl    red 1.87    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          Ph  Cl   CH.sub.3                                                                             red 1.94    ◯               (19-1-c K: NN)                                                                 1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      CN  H    H     red 1.94    Δ                     1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      CN  H    H     red 1.94    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 2H.sub.4 0H                                                                      CH.sub.3                                                                              CN  H    CH.sub.3                                                                             red 1.91    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      NO.sub.2                                                                           H    H     red 1.88    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CH.sub.3                                                                           H    COCH.sub.3                                                                           red 1.87    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          C.sub.4 H.sub.9                                                                    CH.sub.3                                                                            H     red 1.91    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     Ph  H    H     red 1.86    Δ                     7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOCH.sub.3                                                              NHSO.sub.2 CH.sub.3                                                                   Ph  OC.sub.2 H.sub.5                                                                    Cl    red 1.82    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          Ph  Cl   CH.sub.3                                                                             red 1.84    ◯               (19-2-a K: NN)                                                                 1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      CN  H          red 1.96    ◯               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              CN  CH.sub.3   red 1.95    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      NO.sub.2                                                                           H          red 1.94    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CH.sub.3                                                                           2OC.sub.2 H.sub.5                                                                         red 1.91    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          C.sub.4 H.sub.9                                                                    2, 3diC.sub.2 H.sub.5                                                                     red 1.93    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     Ph  2Cl, 3CH.sub.3                                                                            red 1.87    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOCH.sub.3                                                              NHSO.sub.2 CH.sub.3                                                                   Ph  4OCOC.sub.2 H.sub.5                                                                       red 1.81    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          Ph  3CH.sub.3, 4Ph                                                                            red 1.84    ◯               (19-2-b K: NN)                                                                 1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      CN  H          red 1.94    ◯               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              CN  CH.sub.3   red 1.92    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      NO.sub.2                                                                           H          red 1.96    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CH.sub.3                                                                           2-C.sub.2 H.sub.5                                                                         red 1.90    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          C.sub.4 H.sub.9                                                                    2, 3diC.sub.2 H.sub.5                                                                     red 1.91    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     Ph  2Cl, 3CH.sub.3                                                                            red 1.88    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOCH.sub.3                                                              NHSO.sub.2 CH.sub.3                                                                   Ph  4OCOC.sub.2 H.sub.5                                                                       red 1.82    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          Ph  3CH.sub.3,4Ph                                                                             red 1.87    ◯               (19-2-c K: NN)                                                                 1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      CN  H          red 1.94    ◯               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              CN  CH.sub.3   red 1.91    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      NO.sub.2                                                                           H          red 1.95    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl     CH.sub.3                                                                           2-C.sub.2 H.sub.5                                                                         red 1.90    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          C.sub.4 H.sub.9                                                                    2, 3diC.sub.2 H.sub.5                                                                     red 1.92    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 CCOCH.sub.3                                                              OH     Ph  2Cl,3CH.sub.3                                                                             red 1.91    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOCH.sub.3                                                              NHSO.sub.2 CH.sub.3                                                                   Ph  4OCOC.sub.2 H.sub.5                                                                       red 1.87    ◯               8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          Ph  3CH.sub.3,4Ph                                                                             red 1.90    ◯               (19-3-a K: NN)                                                                 1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H          CN         red 1.95    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3   SC.sub.2 H.sub.5                                                                          red 1.92    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H          NO.sub.2   red 1.91    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl         CN         red 1.87    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                              CN         red 1.92    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH         CN         red 1.83    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOCH.sub.3                                                              NHSO.sub.2 CH.sub.3                                                                       CN         red 1.81    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                              CN         red 1. 85   ◯               (19-3-b K: NN)                                                                 1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H          CN         red 2.05    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3   SC.sub.2 H.sub.5                                                                          red 2.01    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H          NO.sub.2   red 2.00    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl         CN         red 1.98    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                              CN         red 1.92    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COCH.sub.3                                                               OH         CN         red 1.95    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOCH.sub.3                                                              NHSO.sub.2 CH.sub.3                                                                       CN         red 1.93    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                              CN         red 1.91    ◯               (19-3-c K: NN)                                                                 1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H          CN         red 1.99    Δ                     2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3   SC.sub.2 H.sub.5                                                                          red 2.00    ◯               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H          NO.sub.2   red 1.91    Δ                     4  C.sub.2 H.sub.5                                                                    Ph        Cl         CN         red 1.87    Δ                     5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                              CN         red 1.94    ◯               6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH         CN         red 1.86    ◯               7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOCH.sub.3                                                              NHSO.sub.2 CH.sub.3                                                                       CN         red 1.85    Δ                     8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                              CN         red 1.86    ◯               __________________________________________________________________________

(20) Dyes represented by the following structural formula: ##STR108## wherein K stands for --N═N-- and R₄ will be defined below.

Specific examples of the dye represented by the general formula 20 and the performance thereof in the case of use in a thermal transfer sheet are given in the following Table 20.

                  TABLE 20                                                         ______________________________________                                          ##STR109##                                                                     ##STR110##                                                                     ##STR111##                                                                     ##STR112##                                                                     ##STR113##                                                                     ##STR114##                                                                     ##STR115##                                                                     ##STR116##                                                                     ##STR117##                                                                    (20-1)                                                                         No.  R.sub.1     R.sub.2     R.sub.3  R.sub.4                                  ______________________________________                                         1    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                            CH.sub.3 CN                                       2    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                            NHCOCH.sub.3                                                                            CN                                       3    C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                            NHSO.sub.2 CH.sub.3                                                                     CN                                       4    C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                            NHCOC.sub.2 H.sub.5                                                                     CN                                       5    C.sub.2 H.sub.4 CN                                                                         C.sub.2 H.sub.5                                                                            CH.sub.3 CN                                       6    C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.4 OCOCH.sub.3                                                                NHCOCH.sub.3                                                                            CN                                       7    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                            NHCOCH.sub.3                                                                            C.sub.4 H.sub.9                          8    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                            CH.sub.3 C.sub.4 H.sub.9                          9    C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                            NHCOCH.sub.3                                                                            Ph                                       10   C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                            NHCOCH.sub.3                                                                            Ph                                       ______________________________________                                         20-1-a K: NN                                                                   No.     hue         coloring density                                                                           light fastness                                 ______________________________________                                         1       red         1.85        Δ                                        2       red         1.97        ◯                                  3       red         1.81        Δ                                        4       red         1.92        ◯                                  5       red         1.88        Δ                                        6       red         1.73        ◯                                  7       red         1.84        Δ                                        8       red         1.89        Δ                                        9       red         1.88        ◯                                  10      red         1.83        ◯                                  20-1-b K: NN                                                                   1       red         1.84        ◯                                  2       red         1.93        ◯                                  3       red         1.77        ◯                                  4       red         1.95        ◯                                  5       red         1.82        Δ                                        6       red         1.78        ◯                                  7       red         1.80        ◯                                  8       red         1.84        Δ                                        9       red         1.93        Δ                                        10      red         1.83        Δ                                        20-1-c K: NN                                                                   1       red         1.71        ◯                                  2       red         1.78        ◯                                  3       red         1.73        ◯                                  4       red         1.82        ◯                                  5       red         1.79        Δ                                        6       red         1.65        ◯                                  7       red         1.74        ◯                                  8       red         1.73        ◯                                  9       red         1.84        ◯                                  10      red         1.85        ◯                                  (20-2)                                                                         No.  R.sub.1     R.sub.2     R.sub.3  R.sub.4                                  ______________________________________                                         1    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                            CH.sub.3 CN                                       2    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                            NHCOCH.sub.3                                                                            CN                                       3    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                            NHSO.sub.2 CH.sub.3                                                                     CN                                       4    C.sub.2 H.sub.4 OCH.sub.3                                                                  C.sub.2 H.sub.5                                                                            NHCOC.sub.2 H.sub.5                                                                     CN                                       5    C.sub.2 H.sub.4 CN                                                                         C.sub.2 H.sub.5                                                                            CH.sub.3 CN                                       6    C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.4 CCOCH.sub.3                                                                NHCaCH.sub.3                                                                            CN                                       ______________________________________                                         20-2-a K: NN                                                                   No.     hue         coloring density                                                                           light fastness                                 ______________________________________                                         1       red         1.92        ◯                                  2       red         2.13        ◯                                  3       red         2.04        ◯                                  4       red         2.02        ◯                                  5       red         1.97        ◯                                  6       red         1.92        ◯                                  20-2-b K: NN                                                                   1       red         1.90        Δ                                        2       red         2.07        ◯                                  3       red         2.09        ◯                                  4       red         2.13        ◯                                  5       red         1.84        ◯                                  6       red         1.97        ◯                                  20-2-c K: NN                                                                   1       red         1.89        ◯                                  2       red         2.03        ◯                                  3       red         2.04        ◯                                  4       red         2.03        ◯                                  5       red         1.91        Δ                                        6       red         1.94        ◯                                  ______________________________________                                         (20-3)                                                                         No.  R.sub.1     R.sub.2     R.sub.3  R.sub.4                                  ______________________________________                                         1    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                            CH.sub.3 CN                                       2    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                            NHCOCH.sub.3                                                                            CN                                       3    C.sub.2 H.sub.5                                                                            C.sub.2 H.sub.5                                                                            NHSO.sub.2 CH.sub.3                                                                     CN                                       4    C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                            NHCOCH.sub.3                                                                            CN                                       5    C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.5                                                                            NHCOCH.sub.3                                                                            SC.sub.2 H.sub.5                         6    C.sub.2 H.sub.4 0CH.sub.3                                                                  C.sub.2 H.sub.5                                                                            NHCOCH.sub.3                                                                            CN                                       7    C.sub.2 H.sub.4 0CH.sub.3                                                                  C.sub.2 H.sub.5                                                                            NHCOCH.sub.3                                                                            SC.sub.2 H.sub.5                         8    C.sub.2 H.sub.4 OCOCH.sub.3                                                                C.sub.2 H.sub.4 OCOCH.sub.3                                                                NHCOCH.sub.3                                                                            CN                                       ______________________________________                                         20-3-a K: NN                                                                   No.     hue         coloring density                                                                           light fastness                                 ______________________________________                                         1       red         1.74        Δ                                        2       red         1.81        ◯                                  3       red         1.77        ◯                                  4       red         1.79        ◯                                  5       red         1.78        Δ                                        6       red         1.75        ◯                                  7       red         1.70        Δ                                        8       red         1.68        ◯                                  20-3-b K: NN                                                                   1       red         1.78        ◯                                  2       red         1.86        ◯                                  3       red         1.82        ◯                                  4       red         1.91        ◯                                  5       red         1.76        ◯                                  6       red         1.84        ◯                                  7       red         1.77        ◯                                  8       red         1.78        ◯                                  20-3-c K: NN                                                                   1       red         1.81        ◯                                  2       red         1.92        ◯                                  3       red         1.88        ◯                                  4       red         1.87        ◯                                  5       red         1.82        ◯                                  6       red         1.92        ◯                                  7       red         1.82        ◯                                  8       red         1.84        ◯                                  ______________________________________                                    

(21) Dyes represented by the following structural formula: ##STR118## wherein K stands for --N═N--, Q' is absent or a ring comprising carbon, hydrogen, nitrogen, oxygen and sulfur and m is an integer of 0 to 4. Examples of the ring include the following.

                                      TABLE 21                                     __________________________________________________________________________      ##STR119##                                                                     ##STR120##                                                                     ##STR121##                                                                     ##STR122##                                                                     ##STR123##                                                                     ##STR124##                                                                     ##STR125##                                                                     ##STR126##                                                                     ##STR127##                                                                     ##STR128##                                                                     ##STR129##                                                                    No.                                                                               R.sub.1                                                                              R.sub.2     R.sub.3  R.sub.4                                                                              R.sub.8                                                                              hue  coloring                                                                                 light                 __________________________________________________________________________                                                              fastness              (21-1-a K: N)                                                                  1  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.5                                                                            H        H     CN    leek green                                                                          1.58      Δ               2  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 OH                                                                         CH.sub.3 H     H     leek green                                                                          1.57      Δ               3  C.sub.2 H.sub.5                                                                      CHCH.sub.2  H        H     CH.sub.3                                                                             leek green                                                                          1.59      Δ               4  C.sub.2 H.sub.5                                                                      Ph          Cl       1-CH.sub.3                                                                           CN    leek green                                                                          1.65      Δ               5  C.sub.2 H.sub.5                                                                      CHCHOCOCH.sub.3                                                                            NHCOCH.sub.3                                                                            1-CH.sub.3                                                                           CN    leek green                                                                          1.54      ◯         6  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 COOCH.sub.3                                                                OH       1-CH.sub.3                                                                           CN    leek green                                                                          1.53      ◯         7  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 OCOC.sub.4 H.sub.7                                                         NHSO.sub.2 CH.sub.3                                                                     1-CH.sub.3                                                                           H     leek green                                                                          1.47      ◯         8  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 OCOOPh                                                                     NHCOCH.sub.3                                                                            1-CH.sub.3                                                                           CH.sub.3                                                                             leek green                                                                          1.56      ◯         (21-1-b K: N)                                                                  1  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.5                                                                            H        H     CN    leek green                                                                          1.54      Δ               2  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 OH                                                                         CH.sub.3 H     H     leek green                                                                          1.56      Δ               3  C.sub.2 H.sub.5                                                                      CHCH.sub.2  H        H     CH.sub.3                                                                             leek green                                                                          1.62      Δ               4  C.sub.2 H.sub.5                                                                      Ph          Cl       1-CH.sub.3                                                                           CN    leek green                                                                          1.63      Δ               5  C.sub.2 H.sub.5                                                                      CHCHOCOCH.sub.3                                                                            NHCOCH.sub.3                                                                            1-CH.sub.3                                                                           CN    leek green                                                                          1.54      ◯         6  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 COOCH.sub.3                                                                OH       1-CH.sub.3                                                                           CN    leek green                                                                          1.51      ◯         7  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 OCOC.sub.4 H.sub.7                                                         NHSO.sub.2 CH.sub.3                                                                     1-CH.sub.3                                                                           H     leek green                                                                          1.50      ◯         8  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 OCOOPh                                                                     NHCOCH.sub.3                                                                            2-CH.sub.3                                                                           CH.sub.3                                                                             leek green                                                                          1.47      ◯         (21-1-c K: N)                                                                  1  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.5                                                                            H        H     CN    leek green                                                                          1.61      Δ               2  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 OH                                                                         CH.sub.3 H     H     leek green                                                                          1.60      Δ               3  C.sub.2 H.sub.5                                                                      CHCH.sub.2  H        H     CH.sub.3                                                                             leek green                                                                          1.58      Δ               4  C.sub.2 H.sub.5                                                                      Ph          Cl       1-CH.sub.3                                                                           CN    leek green                                                                          1.59      Δ               5  C.sub.2 H.sub.5                                                                      CHCHOCOCH.sub.3                                                                            NHCOCH.sub.3                                                                            1-CH.sub.3                                                                           CN    leek green                                                                          1.57      ◯         6  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 COOCH.sub.3                                                                OH       1-CH.sub.3                                                                           CN    leek green                                                                          1.51      ◯         7  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 OCOC.sub.4 H.sub.7                                                         NHSO.sub.2 CH.sub.3                                                                     1-CH.sub.3                                                                           H     leek green                                                                          1.46      ◯         8  C.sub.2 H.sub.5                                                                      C.sub.2 H.sub.4 OCOOPh                                                                     NHCOCH.sub.3                                                                            1-CH.sub.3                                                                           CH.sub.3                                                                             leek green                                                                          1.50      ◯         __________________________________________________________________________     No.                                                                               R.sub.1                                                                            R.sub.2   R.sub.3                                                                               R.sub.4                                                                            R.sub.5                                                                            R.sub.7                                                                               R.sub.8                                                                            hue   coloring                                                                               light                 __________________________________________________________________________                                                              fastness              (21-2-a K: N)                                                                  1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H   H          CN  leek green                                                                           1.52    Δ               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H   H          H   leek green                                                                           1.51    Δ               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      H   2-CH.sub.3 H   leek green                                                                           1.50    Δ               4  C.sub.2 H.sub.5                                                                    Ph        Cl     H   1-Cl       CN  leek green                                                                           1.52    Δ               5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         H          CN  ieekgreen                                                                            1.47    ◯         6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-CH.sub.3                                                                         H          CN  leek green                                                                           1.43    ◯         7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.7                                                       NHSO.sub.2 CH.sub.3                                                                   2-CH.sub.3                                                                         1-Cl       CN  leek green                                                                           1.40    ◯         8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         2-Cl       CH.sub.3                                                                           leek green                                                                           1.41    ◯         (21-2-b K: N)                                                                  1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H   H          CN  leek green                                                                           1.51    Δ               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H   H          H   leek green                                                                           1.49    Δ               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      H   2-CH.sub.3 CN  leek green                                                                           1.48    Δ               4  C.sub.2 H.sub.5                                                                    Ph        Cl     H   1-Cl       CN  leek green                                                                           1.53    Δ               5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         H          CN  leek green                                                                           1.46    ◯         6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-CH.sub.3                                                                         H          CN  leek green                                                                           1.47    ◯         7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.7                                                       NHSO.sub.2 CH.sub.3                                                                   2-CH.sub.3                                                                         1-Cl       CN  leek green                                                                           1.41    ◯         8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         2-Cl       CH.sub.3                                                                           leek green                                                                           1.42    ◯         (21-2-c K: N)                                                                  1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H   H          CN  leek green                                                                           1.52    Δ               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H   H          H   leek green                                                                           1.47    Δ               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      H   2-CH.sub.3 CN  leek green                                                                           1.46    Δ               4  C.sub.2 H.sub.5                                                                    Ph        Cl     H   1-Cl       CN  leek green                                                                           1.51    Δ               5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         H          CN  leek green                                                                           1.48    ◯         6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-CH.sub.3                                                                         H          CN  leek green                                                                           1.43    ◯         7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.7                                                       NHSO.sub.2 CH.sub.3                                                                   2-CH.sub.3                                                                         1-Cl       CN  leek green                                                                           1.42    ◯         8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         2-Cl       CH.sub.3                                                                           leek green                                                                           1.44    ◯         (21-3-a K: N)                                                                  1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H   H   H      CN  leek green                                                                           1.60    Δ               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H   H   H      H   leek green                                                                           1.56    Δ               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      H   2-CH.sub.3                                                                         H      CN  leek green                                                                           1.67    Δ               4  C.sub.2 H.sub.5                                                                    Ph        Cl     H   1-Cl                                                                               CH.sub.3                                                                              CN  leek green                                                                           1.62    Δ               5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         H   CH.sub.3                                                                              CN  leek green                                                                           1.51    ◯         6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-CH.sub.3                                                                         H   C.sub.2 H.sub.4 OC.sub.2 H.sub.5                                                      CN  leek green                                                                           1.54    ◯         7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.7                                                       NHSO.sub.2 CH.sub.3                                                                   2-CH.sub.3                                                                         1-Cl                                                                               H      CN  leek green                                                                           1.50    ◯         8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         2-Cl                                                                               CH.sub.3                                                                              CH.sub.3                                                                           leek green                                                                           1.48    ◯         (21-3-b K: N)                                                                  1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H   H   H      CN  leek green                                                                           1.57    Δ               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H   H   H      H   leek green                                                                           1.58    Δ               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      H   2-CH.sub.3                                                                         H      CN  leek green                                                                           1.62    Δ               4  C.sub.2 H.sub.5                                                                    Ph        Cl     H   1-Cl                                                                               CH.sub.3                                                                              CN  leek green                                                                           1.64    Δ               5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         H   CH.sub.3                                                                              CN  leek green                                                                           1.60    ◯         6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-CH.sub.3                                                                         H   C.sub.2 H.sub.4 OC.sub.2 H.sub.5                                                      CN  leek green                                                                           1.58    ◯         7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.7                                                       NHSO.sub.2 CH.sub.3                                                                   2-CH.sub.3                                                                         1-Cl                                                                               H      CN  leek green                                                                           1.49    ◯         8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         2-Cl                                                                               CH.sub.3                                                                              CH.sub.3                                                                           leek green                                                                           1.53    ◯         (21-3-c K: N)                                                                  1  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.5                                                                          H      H   H   H      CN  leek green                                                                           1.54    Δ               2  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OH                                                                       CH.sub.3                                                                              H   H   H      H   leek green                                                                           1.59    Δ               3  C.sub.2 H.sub.5                                                                    CHCH.sub.2                                                                               H      H   2-CH.sub.3                                                                         H      CN  leek green                                                                           1.58    Δ               4  C.sub.2 H.sub.5                                                                    Ph        Cl     H   1-Cl                                                                               CH.sub.3                                                                              CN  leek green                                                                           1.61    Δ               5  C.sub.2 H.sub.5                                                                    CHCHOCOCH.sub.3                                                                          NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         H   CH.sub.3                                                                              CN  leek green                                                                           1.57    ◯         6  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 COOCH.sub.3                                                              OH     2-CH.sub.3                                                                         H   C.sub.2 H.sub.4 OC.sub.2 H.sub.5                                                      CN  leek green                                                                           1.56    ◯         7  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOC.sub.4 H.sub.7                                                       NHSO.sub.2 CH.sub.3                                                                   2-CH.sub.3                                                                         1-Cl                                                                               H      CN  leek green                                                                           1.50    ◯         8  C.sub.2 H.sub.5                                                                    C.sub.2 H.sub.4 OCOOPh                                                                   NHCOCH.sub.3                                                                          2-CH.sub.3                                                                         2-Cl                                                                               CH.sub.3                                                                              CH.sub.3                                                                           leek green                                                                           1.49    ◯         __________________________________________________________________________

The thermal transfer sheet of the present invention is characterized in that use is made of the above-described particular dyes. The other constitution may be the same as that in the conventional thermal transfer sheet.

The substrate sheet containing the above-described dye used in the thermal transfer sheet of the present invention may be any known one having a heat resistance and a strength to some extent. Examples of the substrate sheet include paper having a thickness in the range of from about 0.5 to 50 μm, preferably in the range of from about 3 to 10 μm, various types of converted paper, a polyester film, a polystyrene film, a polypropylene film, a polysulfone film, a polycarbonate film, an aramid film, a polyvinyl alcohol film and cellophane. A polyester film is particularly preferred.

The dye supporting layer provided on the surface of the above-described substrate sheet comprises a layer produced by supporting on the substrate sheet a dye selected from those represented by the general formula (I) by means of an arbitrary resin.

The binder resin for supporting the above-described dye may be any conventional one, and preferred examples thereof include cellulose resins such as ethyl cellulose, hydroxyethyl cellulose, ethylhydroxy cellulose, hydroxypropyl cellulose, methyl cellulose, cellulose acetate and cellulose acetate butyrate, and vinyl resins such as polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, polyvinyl acetoacetal, polyvinyl pyrrolidone and polyacrylamide. Among them, polyvinyl butyral and polyvinyl acetal are particularly preferred from the viewpoint of the heat resistance and the migration of a dye.

The dye supporting layer of the thermal transfer sheet of the present invention is basically comprised of the above-described material and, if necessary, additionally contains various additives known in the art.

The above-described dye supporting layer is preferably formed by adding the above-described dye, binder resin and optional components to a suitable solvent to dissolve or disperse the individual components in the solvent to prepare a coating solution or an ink for the formation of a supporting layer, coating the coating solution or ink on the substrate sheet and drying the resultant coating.

The thickness of the supporting layer thus formed is in the range of from about 0.2 to 5.0 μm, preferably in the range of from about 0.4 to 2.0 μm. The content of the dye in the supporting layer is preferably 5 to 70% by weight, still preferably 10 to 60 % by weight based on the weight of the supporting layer.

Although the thermal transfer sheet of the present invention, as such, is sufficiently useful for a thermal transfer application, it is also possible to further provide a surface tack eliminating layer, that is, a release layer, on the surface of the dye supporting layer. The provision of such a layer enables the tack adhesion of the thermal transfer sheet to the transfer material to be prevented during the thermal transfer, so that an image having a better density can be formed through the use of a higher thermal transfer temperature.

Regarding the release layer, a considerable effect can be attained by merely adhering an antitack inorganic powder. Further, for example, it is also possible to select a highly releasable resin, such as a silicone polymer, an acrylic polymer or a fluorinated polymer, and to provide a release layer of the selected resin having a thickness in the range of from 0.01 to 5 μm, preferably in the range of from 0.05 to 2 μm.

The inorganic powder or releasable polymer can exhibit a sufficient effect also when it is incorporated in the dye supporting layer.

Further, a heat resistant layer may be additionally provided on the back surface of the thermal transfer sheet for the purpose of preventing an adverse effect of heat from a thermal head.

The transfer material used for forming an image through the use of the above-described thermal transfer sheet may be any one as far as the recording face has a capability of accepting the above-described dye. When the transfer material is paper, a metal, glass, a synthetic resin or other material incapable of accepting the dye, a dye accepting layer may be formed on one surface such a material.

Means for applying a thermal energy used in the thermal transfer through the use of the thermal transfer sheet according to the present invention and the recording material may be any means known in the art. For example, a desired object can be sufficiently attained by applying a thermal energy of about 5 to 100 mJ/mm² through the control of a recording time by means of a recording device, for example, a thermal printer (for example, a video printer VY-100 manufactured by Hitachi, Limited).

The present invention will now be described in more detail with reference to the following Example and Comparative Example. In the Examples and Comparative Examples, "parts" is by weight unless otherwise specified.

EXAMPLE

An ink composition comprising the following components for the formation of a dye supporting layer was prepared, and the ink composition was coated on a 6 μm-thick polyethylene terephthalate film having a back surface subjected to tropicalization so that the coverage on a dry basis was 1.0 g/m². The resultant coating was dried to give the thermal transfer sheet of the present invention.

    ______________________________________                                         Dye listed in Table A1                                                                               3 parts                                                  Polyvinyl butyral resin                                                                              4.5 parts                                                Methyl ethyl ketone   46.25 parts                                              Toluene               46.25 parts                                              ______________________________________                                    

In the above-described composition, when the dye was insoluble, DMF, dioxane, chloroform or the like was properly used as a solvent. when the dye was not be sufficiently dissolved in the solvent, use was made of the filtrate.

Then, synthetic paper (Yupo FPG #150 manufactured by Oji-Yuka Synthetic Paper Co., Ltd.) was used as the substrate sheet, and a coating solution having the following composition was coated on one surface of the synthetic paper so that the coverage on a dry basis was 10.0 g/m². The resultant coating was dried at 100° C. for 30 min to give a thermal transfer sheet.

    ______________________________________                                         Polyester resin          11.5 parts                                            (Vylon 200 manufactured                                                        by Toyobo Co., Ltd.)                                                           Vinyl chloride/vinyl acetate copolymer                                                                  5.0 parts                                             (VYHH manufactured by UCC)                                                     Amino modified silicone (KF-393                                                                         1.2 parts                                             (manufactured by The                                                           Shin-Etsu Chemical                                                             Co., Ltd.)                                                                     Epoxy modified silicone (X-22-343                                                                       1.2 parts                                             (manufactured by The                                                           Shin-Etsu Chemical                                                             Co., Ltd.)                                                                     Methyl ethyl ketone/toluene/cyclohexanone                                                               102.0 parts                                           (weight ratio of 4:4:2)                                                        ______________________________________                                    

The above-described thermal transfer sheet of the present invention and the above-described transfer material were put on top of the other in such a manner that the dye supporting layer and the dye accepting surface faced each other. Recording was conducted by means of a thermal head from the back surface of the thermal transfer sheet under conditions of a head applied voltage of 11 V and a setting time of 14.0 msec. The results are given in the above-described tables.

Comparative Examples 1 to 5

The procedure of Example 1 was repeated, except that dyes listed in the following Table 22 were used instead of the dyes used in Example 1. The results are given in the following Table 22.

                  TABLE 22                                                         ______________________________________                                                        Coloring Light                                                  Comp. Ex.      density  fastness                                               ______________________________________                                         1              0.99     ×                                                2              1.16     Δ                                                3              2.07     ×                                                4              1.12     Δ                                                5              1.02     ×                                                ______________________________________                                          Note)                                                                          Comp. Ex. 1 = C.I. Disperse Blue 14                                            Comp. Ex. 2 = C.I. Disperse Blue 134                                           Comp. Ex. 3 = C.I. Solvent Blue 63                                             Comp. Ex. 4 = C.I. Disperse Blue 26                                            Comp. Ex. 5 = C.I. Disperse Violet 4                                     

The above-described recording density is a value measured by densitometer RD-918 manufactured by Macbeth, U.S.A.

The light fastness test was conducted by subjecting an image to irradiation by means of a xenon arc light (50 KLux) for 24 hr. When no change in the sharpness of the image was observed after this test, the light fastness was evaluated as "◯"; when a slight deterioration in the sharpness of the image was observed, the light fastness was evaluated as "Δ"; and when a deterioration in the sharpness of the image was observed, the light fastness was evaluated as "X".

Mutagenic Test:

Ames test was conducted as an identical amest test with respect to representative examples of the intermediate of the present invention and control dyes having the same structure as that of the intermediate of the present invention, except that the ring was a pyridine ring instead of the phenyl ring.

The ames test was conducted in such a state that Salmonella TA1538 and TA98 were metabolically activated by a preincubation method (+x9mix). The dye was used in contentrations in five grades in the range of from 0 to 5 mg. Acetone was used as the solvent control. The toxicity was judged based on the maximum increase in the colony of the sample as compared with the solvent control. Specifically, when the increase in the reversion colony was twice or more as compared with that in the case of the control, the mutagenicity was judged as positive, while when the increase in the reversion colony was less than twice as compared with that in the case of the control, the mutagenicity was judged as negative. The results are given in the following Table.

                  TABLE 23                                                         ______________________________________                                                                 Increase                                               Dye of the present invention                                                                           (times)  Toxicity                                      ______________________________________                                          ##STR130##             1.5      negative                                      (10-1-a K = NN No. 1)                                                           ##STR131##             1.3      negative                                      (6-a No. 4)                                                                     ##STR132##             1.5      negative                                      (5-a No. 14)                                                                    ##STR133##             2.2      positive                                       ##STR134##             5.2      positive                                       ##STR135##             1.7      negative                                      ______________________________________                                    

As is apparent from the foregoing description, a thermal transfer sheet excellent in the coloring density, sharpness and light fastness can be provided through the use of an intermediate having a particular structure and a dye produced by making use of the intermediate as a starting compound. 

What is claimed is:
 1. An azomethine dye produced by coupling a pyridine derivative represented by the following formula A or B with a coupler capable of providing a C═N-- linkage at Z of A or B: ##STR136## wherein Z stands for an atom or atom group having a coupling capability selected from a hydrogen atom, an amino group, a halogen atom, a nitro group and a nitroso group;R₁ and R₂ each independently stand for a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, vinyl group, allyl group, aryl group, alkoxyalkyl group having 2 to 12 carbon atoms, aralkyl group, alkoxycarbonylalkyl group having 3 to 12 carbon atoms, carboxyalkyl group having 3 to 12 carbon atoms, alkoxycarboxyalkyl group having 3 to 12 carbon atoms, substituted or unsubstituted cycloalkyl group having 3 to 12 carbon atoms, substituted or unsubstituted acylamino group having 2 to 12 carbon atoms, substituted or unsubstituted alkylsulfonylamino group having 1 to 12 carbon atoms, substituted or unsubstituted oxycarbonyl group having 2 to 12 carbon atoms, substituted or unsubstituted ureido group having 1 to 8 carbon atoms, substituted or unsubstituted carbamoyl group having 2 to 12 carbon atoms, substituted or unsubstituted sulfamoyl group having 1 to 12 carbon atoms, substituted or unsubstituted heterocyclic group having 2 to 12 carbon atoms, substituted or unsubstituted acyl croup having 2 to 12 carbon atoms, substituted or unsubstituted amino group or substituted or unsubstituted sulfonyl group having 1 to 12 carbon atoms, provided that R₁ and R₂ may combine with each other to form a ring or R₁ and R₂ may bond at the 5 position on (A), or the 4 position on (B) and/or the 6 position on (B) to form a ring; R₃ stands for hydroxyl group, a halogen atom, a cyano group or a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, alkylcarbonyl group having 2 to 8 carbon atoms, carbamoyl group, sulfamoyl group, amino group, carboxyl group, alkoxy group or unreido group; and n is an integer of 0 to
 3. 2. An azomethin dye according to claim 1, which is represented by the following formula: ##STR137## wherein R₁₅ and R₁₆ stand for a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group or a substituted or unsubstituted alkyl group, aryl group, allyl group, aralkyl group, alkoxyalkyl group, alkoxy group, heterocyclic group, aralkylalkoxyalkyl group, carbamoyl group, sulfamonyl group, oxycarbonylalkyl group, oxycarbonyl group, carboxyalkyl group, formylamino group, sulfonylamino group, amino group or cycloalkyl group; E stands for a nitrogen atom or a carbon atom; and m is an integer of 0 to
 3. 3. An azomethin dye according to claim 1, which is represented by the following general formula (1) or (2): ##STR138## wherein R₄ to R₉ stand for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group, alkoxy group, amino group, ureido group, --CON(R₁₀)(R₁₁), --CSN(R₁₀)(R₁₁), --SO₂ N(R₁₀)(R₁₁), --COOR₁₀ or --CSOR₁₀ wherein R₁₀ and R₁₁ stand for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, cycloalkyl group having 3 to 8 carbon atoms, aryl group, vinyl group, ally group or aromatic heterocyclic group, provided that R₁₀ and R₁₁ may combine with each other to form a ring; or ##STR139## wherein R₄ stands for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, alkoxy group having 1 to 8 carbon atoms, amino group, ureido group, carbamoyl group, sulfamoyl group, --NHCOR₈, --NHCSR₈, --NHCON(R₈) (R₉), --NHCSN(R₈)(R₉), --NHCOOR₈, --NHCSOR₈, --NHCONHR₈, --NHCSNHR₈, --NHSO₂ R₈ or --NHSO₂ N(R₈)(R₉) wherein R₈ and R₉ stand for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, aryl group, vinyl group, ally group, cycloalkyl group having 3 to 8 carbon atoms or aromatic heterocyclic group, provided that R₈ and R₉ may combine with each other to form a ring; and R₅ and R₇ stand for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, alkoxy group having 1 to 8 carbon atoms, amino group, formylamino group, alkylformylamino group having 1 to 8 carbon atoms, sulfonylamino group, alkylsulfonylamino group having 1 to 8 carbon atoms, ureido group, carbamoyl group, sulfamoyl group or carboxyl group.
 4. An azomethin dye according to claim 1, which is represented by the following structural formula (3) or (4): ##STR140## wherein I stands for --COJ, --CONHJ, --CONHCOJ, --SO₂ J, --SO₂ NHJ, --SO₂ NHCOJ, --COOJ, --CSJ, --CSOJ or --CSNHJ wherein J stands for a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, aryl group, vinyl group, allyl group, cycloalkyl group having 3 to 8 carbon atoms, aralkyl group, alkenyl group or heterocyclic group. 